intern – Marin Science Seminar

February 14, 2017

Interview with Marine Biologist/Veterinarian Claire Simeone of Marine Mammal Center

Claire Simeone DVM at work

by Kavi Dolasia, Tamalpais High School

Claire Simeone, DVM is a Conservation Medicine Veterinarian at The Marine Mammal Center in Sausalito, California, as well as National Marine Fisheries Service in Washington, DC. In addition to taking care of sick marine mammals that come for treatment at the rehabilitation center, she also travels nationally to respond to Unusual Mortality Events, develops international training programs, and works on the Marine Mammal Health Map, which provides a centralized reporting system for marine mammal health data.

To learn more about her profession, we interviewed her.

1. How did you first get involved in marine biology and the field of veterinary?

I knew I loved both animals and science from an early age. Biology was one of my favorite subjects in high school, and I decided to study neurobiology in college. I started as a volunteer at a veterinary clinic in high school, and continued to work as a veterinary technician through college and veterinary school.

My Dad was an environmentalist, and gave me a deep respect for wildlife and the ocean. I began to be exposed to many different careers that veterinarians could have, and realized that I could combine my love of science and wildlife conservation in a job. My career has been a dream come true.

2. How was your experience training with SeaWorld San Diego?

Much of what I was taught about marine mammal medicine came from my mentors at SeaWorld San Diego and the Navy Marine Mammal Program.SeaWorld has been in the media spotlight recently, and there are a variety of opinions about marine mammals in captive care. In my experience, the animals receive the highest quality medical care, and each person that works with them is incredibly invested in caring for these animals in the best way possible. Medicine is continually advancing, and one of the best parts of my job is that I get to be a part of the pioneering science that improves the health of marine mammals everywhere.

3. What is your favorite “project” you have worked on within the Marine Mammal Center?

One of the most exciting projects has been to be a part of Ke Kai Ola, our hospital for endangered Hawaiian monk seals. We work with partners like the National Marine Fisheries Service and the Coast Guard to rescue young animals that would otherwise not survive on their own, and rehabilitate them in our hospital. We use the knowledge we’ve gathered over 40 years of caring for other seals like elephant seals and harbor seals, and apply it to working with this rare species. Since our hospital opened in 2014, we have rehabilitated more than 1% of the entire population. The best news is that during their last estimate, it looks like the population is starting to increase! This is an amazing way for me to be a part of a project that is literally saving a species.

4. What are the best parts of your job? What are the worst?

There are so many amazing parts of this job! First, every day is different. I never know if I’ll be performing surgery in the hospital, or presenting at a scientific conference, or examining a healthy seal in the wilds of Alaska.

Second, I’m lucky to be able to work with such interesting animals. In addition to being entertaining characters, they’re always teaching us something new about themselves, or the ocean. Third, I love being able to share our science and discoveries with the world. So many of the things my fellow scientists are working on are fascinating, and I am thankful that I’m in a position to share this with so many people.The most difficult part of my job is dealing with the realities of working with sick animals and a sick ocean. We can’t save every animal, and sometimes working with so many sick animals can be sad and overwhelming. That’s why I work to balance negativity with positive conservation stories.

5. Why are you so passionate about ocean conservation?

As we become a global society, our Earth is becoming a smaller place. It used to feel as though our oceans were limitless, with unending stocks of fish. We are now acutely aware that we humans have a significant impact on the ocean. Many of the patients we see at The Marine Mammal Center are impacted by human actions – entangled in ocean trash or struck by a ship.But just as we have the capacity to have a negative impact, we also have the capacity to save our oceans. Marine mammals hold secrets about human health, and the health of the ocean. I feel a responsibility to share these secrets so that every person has the information they need to conserve this planet we share.

6. What advice would you give to someone who aspires to work in a similar field?
It’s a big job to save the ocean! We need lots of people working hard on many different projects. My biggest advice would be to stay open-minded about possibilities. I knew I loved biology, but it was a Spanish teacher who suggested I do an exchange during high school, and now I use Spanish when I work on international marine mammal projects. You never know how your skills will come in handy in the future. Get out there and volunteer at places that are doing interesting work. The Marine Mammal Center has a Youth Crew program for students ages 15-18, and allows you to get hands on experience rehabilitating marine mammals.

Learn more at: http://www.marinemammalcenter.org/Get-Involved/volunteer/youth-crew/

Lean more about Claire Simeone at Marin Science Seminar here: http://www.marinscienceseminar.com/speakers/csimeone.html

marinscienceseminar.com

February 10, 2017

Interview with Chemical Engineer Eric Stevenson of the Bay Area Air Quality Management District

by Shoshana Harlem, Terra Linda High School

Eric Stevenson is a chemical engineer who works with the Bay Area Air Quality Management District. He helps figure out air quality issues such as how to reduce greenhouse gases. To find out more about his work, we interviewed him.

1. How did you first become interested in being a chemical engineer in the environmental field?

I was always interested in the environment, even as a child. As I progressed through school, I had an aptitude for math and chemistry, so chemical engineering seemed the logic choice.

2. What air quality issues are you currently working on?

Right now, we are working on a rule to reduce risk from air pollutants at facilities throughout the Bay Area to the lowest levels achievable. In addition, we are also working on a way to regulate and reduce greenhouse gases, first from refineries and then from other high GHG emitting facilities.

3. How do you think the new presidential administration will impact your organization?

Luckily, while we interact with EPA on a large number of issues, we do not receive much funding from them and we also have stricter regulations than them. While I anticipate that the next four years will be difficult, the fact that we’re in California should help us weather the potential issues with EPA.

4. What does a typical work day look like for you? Also, what is the best and worst part of your job?

I go to a lot of meetings and work with my staff to get them what they need to get their jobs done. I do my best to anticipate issues and problems and plan for successful outcomes. The people I work with are the best part of the job, as they are dedicated public servants, doing their best to protect the health of Bay Area residents. The worst part of the job is difficult to define, but it’s hard trying to anticipate all of the issues that might come up, and that can make the job more difficult.

5. What advice do you have to people that want to be a chemical engineer in the environmental field?

Learn to work with data and listen to what the data are telling you. Develop your ability for critical thought.

Want to hear more about Eric Stevenson and his job? Come join us on Wednesday, February 15, 2017 at Terra Linda High School from 7:30 PM – 8:30 PM in Room 207!

January 31, 2017

The Intelligent Sea Lion

By Shoshana Harlem, Terra Linda High School

www.marinscienceseminar.com/speakers/csimeone.html

The brain of a sea lion!

Can an animal still be a good scientist without thumbs? The answer is yes, because the sea lion is in this exact situation. Although sea lions have no thumbs, they have a big brain. Their brain is about the same size as a chimpanzee brain. They are one of the few mammals besides dolphins, humans, elephants, and whales that have brains that weigh more than 1.51Lbs. Scientists are not sure why the sea lion has such a big brain, but they think that it might be because they have a large body size and those two usually correspond. Other theories have to do with the weightlessness of the marine environment, coping with cold water temperature, or perhaps it is just a random outcome of evolution.

The sea lion’s brain consists of different regions for processing information from their whiskers. A specific, corresponding, area in the brainstem is devoted to each whisker on the sea lion’s nose. The areas in their brain that are responsible for processing touch information from the whiskers and the skin are the thalamus, cortex, and brainstem. Likewise, the human brain has specific areas which correspond to the individual fingers of a person. The whiskers on the sea lion assist with sea lion behavior and sensation. There are certain areas in the sea lion’s brain which are made for processing touch sensations from their flappers and tail. Scientists don’t know a lot about the sea lions cerebral skills. The sea lion has a particular part of their brain called the Bischoff’s Nucleus, which is very well-developed. It is surprising that sea lions have this part of their brain because it is usually found in animals with prominent tails such as kangaroos, raccoons, and whales. But the sea lion’s tail is tucked and small behind its hind flippers.

A sea lion’s very important whiskers!

On each side of a sea lion’s face, are 38 whiskers. The whiskers can grow to be eight inches in length and are really sensitive. The sea lion produces more nerve fibers than any other animal in the animal kingdom. Its whiskers can be helpful in many ways too. One way is that they use their whiskers is to spot a fish by looking for changes in the flow of the water. They can find fish that are swimming up to 590 feet away from them. The whiskers can also help a sea lion know the differences between shapes and sizes up to as far as a fraction of a centimeter.

Amazingly, the sea lion’s brain is capable of higher cognitive functioning. A sea lion can play a game of Concentration. Through trial and error, they can match unrelated symbol pairs. They can also recognize signals, which is really useful in the wild. In this way they can find food, and know if someone is their friend or their enemy. Sea lions also have the ability to think logically. The can know that if a=b and b=c, then a=c.

To learn more about why sea lions are such good scientists, come to the Marin Science Seminar at Terra Linda High School in room 207 on Wednesday, February 8, 2017. Claire Simeone DVM of the Marine Mammal Center in Sausalito will be speaking. Join us and learn!

Sources:

January 12, 2017

Paper Planes and World Record Breaking: An Interview with John Collins

by Zach Griggy, San Marin High School, Novato

Inside a hanger at McClellan Airfield, a crowd gathered to watch an attempt to break the World Record in paper aircraft distance. Following a throw, the airplane began to climb into the air. Halfway across the hanger, the paper aircraft stalled briefly, beginning a glide towards the concrete floor below. Approaching the ground, the plane pulled out and sailed across a white line. In those nine seconds, the World Record for Paper Aircraft Distance was broken.

John Collins, the maker of that record-breaking paper airplane, has been designing paper planes for years. He has written books and appeared on many television programs, including the Tonight Show with Conan O’Brien. On January 11th, 2017, John Collins gave a talk at Marin Science Seminar about aerodynamics and paper airplane design.

Following his talk, we interviewed Mr. Collins about his profession and his design process.

1. How did you first become interested in making and paper airplanes?

I just never got out of paper airplanes. Most people get over it a few months after getting into it. I started with planes, moved into origami, and then took all of those folding tricks back to paper airplanes.

2. How many attempts did you make in order to achieve the World Record for Paper Airplane Distance? How did these earlier attempts influence later attempts and designs?

Countless. I worked on it for 3 years. Joe (the thrower) was with me for the last 18 months. We went through Moffett Field, Mojave, and finally succeeded in McClellan Airfield. We started out with a ballistic style dart, but Joe couldn’t beat the old world record with that kind of plane. We switched to a glider strategy, and immediately knew we were on the right track. It took a lot of tinkering with the design and taping scheme to come up with the winning plane. The folding pattern ended up being my very first try with A4 paper three years before.

3. How has the Maker Movement influenced you and/or your design process?

It was inspirational to be sure. They asked me to participate in the very first Maker Faire in San Mateo, 13 years ago. I’ve been part of every one since. My first book was published 13 years before that first Maker Faire, so perhaps we influenced each other. My design process hasn’t really changed, but it’s been fun interacting with high end tinkerers.

4. What are the best parts of your job? What are the worst?

Easy; the best part is the audience reaction. When kids light up and start asking questions, it makes it all worthwhile. Every once in a while, I have to fold hundreds of the same kind of plane for an event. That’s a bit tedious, but I put on some music, find my comfortable work chair, lay out the paper and get to work. I count the sheets of paper before I start making the planes. When I make it to the bottom of the stack, I’m finished.

5. What advice would you give to makers or students who wish to become makers?

Find something you enjoy and follow it. Don’t be afraid to change paths, even more than once. I started in planes, moved to origami, and then discovered my real passion was taking one technology and throwing it at the other. If you’re going to be the best at anything, you have to love it. Nobody can force you (at least in this country) to give up food, sleep, or being with friends to accomplish a big goal. You can’t really compete with someone who’s willing to do that. You have to be that passionate about your craft. That passion is self-imposed; it comes from deep inside. External forces will try to resist it.

Video Footage of the seminar will be available on Vimeo*. The Spring 2017 Schedule can be accessed here.

*Please note that it takes some time for footage to be processed and uploaded. A link will be added to this page when the video has been uploaded

April 17, 2016

Space Travel: How Does Outer Space Affect Your Body?

By Rachael Metzger, MSS Intern

Have you ever wanted to become an astronaut? Travel to space? Have you dreamed about finding extraterrestrial life or communing with aliens? If your answer is yes, I can assure you that you’re not alone. Countless children dream of becoming astronauts, and many movies and TV shows have revolved around exploring space. The exploration of the unknown is a wonderful idea on paper, but it is a lot more complicated than jumping into a spaceship and traveling to Mars, even if we have the technology to do so. Space travel can take a huge toll on a human’s body if certain precautions are not taken; any error could result in death.
The human body was not made to travel in space, nor has it had time to adapt to such an environment. When launched into space, some effects of that changed environment on the body take longer than others to be felt. Immediately one might experience nausea and/ or vomiting. This is caused by the sensitivity of the inner ear which affects balance and orientation. Thankfully, in a couple of days the inner ear will have adapted to the new environment and the nausea will dissipate (BBC “future”).
In about two days, bodily fluids will rise to the upper body and face, causing a bloated appearance, and tissues will swell in the head, making a person feel like they are hanging upside down. This makes the body think that it is over–hydrated and it forces the liquid out through urine, causing astronauts to have 20% less fluids in their body while in space.

Bodily Fluids in Space

Spaceflight can also quickly affect eyesight, creating anomalies such as optic nerve swelling, retinal changes in the shape of the eye, and other negative effects to the eye
In a week’s time muscle and bone loss can start to occur, and this sometimes includes heart muscle because not as much effort is needed to pump blood in anti-gravity. The lack of gravity can have such an extreme effect on bones that they can become very brittle; this is called “disuse osteoporosis” (The Dallas Morning News “Preparing Bodies for Liftoff”). Even astronauts’ skin will get thinner, making them more prone to cuts and infections which take longer to heal in space. Sleep deprivation is another problem among astronauts. Because of the change in the light-dark cycle, it can be a challenge for the body to adapt to the new sleeping schedule (NASA).

The Effects of Space Travel on the Body

After a while aboard a spacecraft, astronauts may find their immune system becoming less effective, making them more susceptible to diseases. Cosmic radiation is another huge issue facing astronauts. Astronauts seeing flashes of light in their brains is proof of the cosmic radiation. Astronauts’ brains could suffer brain damage from cosmic rays over long periods in deep space, affecting their mental performance (BBC “future”).
All these dangers could be fatal and might make space travel seem impossible, but there are many precautions being taken to allow us to explore our universe in a safer way. Nausea and vomiting can not always be avoided, but anti-nausea pills and a strong stomach help towards inner ear balance in space. To battle losing 20% of bodily fluids, astronauts must stay well hydrated while their bodies adjust to the new climate. The rising of bodily fluids to the upper body may be uncomfortable but has not been linked to long lasting negative effects on astronauts, and it subsides after a couple of days. Bone and muscle loss is one of the largest problems facing astronauts. On the International Space Station, astronauts stay fit with a machine for weight lifting, a treadmill adapted for microgravity, and a Cyclergometer, which is a modified cycler for microgravity (NASA). Astronauts have a very strict sleeping schedule to try and achieve the maximum hours of sleep possible. Astronauts have to be very careful of keeping waste and bacteria contained that could contaminate their lowered immune systems. For long expeditions such as to Mars, radiation protection is being experimented with in the forms of water, waste, plastic, and many other substances.
Being an astronaut involves more than just knowing about your area of study, it requires knowledge of how the human body operates. If your dream is to become an astronaut, consider the risks, know about your body, but don’t be scared off. Medical and technological advances continue to make space flight safer and easier on the human body, presenting an opportunity to explore space to a further extent.

Sources:
1. http://www.nasa.gov/missions/science/f_workout.html
2. http://www.space.com/29309-space-radiation-danger-mars-missions.html
3. http://nsbri.org/the-body-in-space/
4. http://interactives.dallasnews.com/2015/spacebody/
5. http://www.bbc.com/future/story/20140506-space-trips-bad-for-your-health
6. http://www.nasa.gov/content/study-compiles-data-on-problem-of-sleep-deprivation-in-astronauts/

March 18, 2016

An Interview With Diara Spain, Ph.D

By Rachael Metzger, MSS Intern

Ocean acidification is an issue becoming apparent in the effects on both sea creatures and humans. Diara Spain, the Associate Professor of Biology at Dominican University, came to Marin Science Seminar to talk to us about her studies in marine invertebrates and the damage ocean acidification is causing them.

To learn more about Diara Spain and what inspired her studies we conducted an interview:

1. How did you get interested in biology? Is there a time, event,
or person in your life that inspired you to pursue the study?

I’ve always been interested in biology, really science in general. I grew up in rural North Carolina and as a kid it was expected that you’d spend most of your free time outside playing with your friends and pets. One thing that sparked my interest in marine organisms were the summer vacations at the undeveloped beaches in North Carolina.

2. Why did you specifically decide to focus on functional morphology, locomotion in echinoderms, and the mechanical properties of crustacean exoskeletons? How do studying these subjects help expand your view on the ocean and how humans are affecting it?

The essence of functional morphology is “function from form”, this gives us insight into how biological structures can actually work mechanically or physiologically. I find this compelling, especially when you consider marine invertebrates which have a wide array of morphological features. At first glance locomotion in sea cucumbers and properties of crustacean exoskeletons may seem to have little in common, but both topics are based on skeletal support systems which is my major interest. I’ve learned quite a bit about different marine habitats as well as how populations size and species diversity has changed from my studies.

3. What is the most interesting study you have done to date?

I’d have to say my work on locomotion in echinoderms, specifically sea cucumbers. These are very unusual organisms and the average person may not know much about them, but when I describe them it never fails to amaze. My students enjoy watching the time-lapse videos, I actually gave a talk at the seminar several years ago titled “Life in the Slow Lane”. My studies on crustaceans are just beginning but I fully expect some interesting stories in the future.

4. How do you hope the ocean will look in 20 years and what are some steps we can take to get there?

The oceans are important for the functioning of our global ecosystem as well as the global economy. I’d like to see a habitat that is healthier for animals (including humans) to live, play and work.

An example of a smaller step is decreasing the widespread use of disposable plastics while increasing the usage of recyclable/reusable materials. A much larger step is the approval of ocean friendly policies that support conservation and sustainability while restricting damage and pollutants.

5. What is your advice to teens and young adults who want to help preserve our oceans and the creatures that live in it?

The best advice is to become involved, this can be done at multiple levels from local and regional up to globally in a way you feel most comfortable. Every fall there is a International Coastal Cleanup Day, San Rafael’s Volunteer Program coordinates people with specific sites locally. Volunteers and donations are also welcome at marine conservation organizations, some focus on a specific animal like sea turtles or dolphins while others focus on a issue such as ocean pollution or habitat restoration.

March 10, 2016

Ocean Acidification: How the Ocean is Acidifying and Affecting the Organisms That Call it Home

By Zack Griggy, San Marin HS

Pollution is a global problem. One way to find proof of this is to look to the seas. We all know that the oceans have suffered greatly from pollution, evidence of which can be seen almost anywhere, from areas suffering from oil spills to the huge cluster of garbage floating in the North Pacific Ocean. We also know that many aquatic species are dying and going extinct because of ocean pollution. However, oils spills and trash aren’t the only causes. Another cause is ocean acidification, which is caused by air pollution.
Ocean acidification begins with carbon dioxide. Carbon dioxide is an essential part of photosynthesis in plants. However, it is also a greenhouse gas, and carbon dioxide emissions have become a global problem. Carbon Dioxide is one of the main contributors to both global climate change and ocean acidification. Carbon dioxide is emitted in huge quantities around the world. Part of these emissions are absorbed by the oceans. This leads to chemical reactions within the oceans to form Carbonic Acid from carbonate and hydrogen ions, which are formed using CO2 absorbed by the oceans. Carbonic Acid is the main cause of ocean acidification. For the past 300 million years, the oceans have had a pH of 8.2, but recently since the industrial revolution, that pH has dropped to 8.1. Estimates say that the ocean acidity may drop by another 0.5 pH
The effects of ocean acidification can be very harmful to marine ecosystems. Many marine organisms such as arthropods, coral, and plankton will be impacted by ocean acidification. These organisms use the process of calcification to create shells, exoskeletons, etc. Calcification relied on using two ions, carbonate and calcium ions. However, Carbonic Acid also uses carbonate ions, which makes it more difficult for the aforementioned organisms to make their exoskeletons or shells. In addition, when more carbon is absorbed by the oceans, hydrogen ions become more abundant, which makes it increasingly more difficult for the organisms to make their exoskeletons.

Sources:
1. https://www3.epa.gov/climatechange/science/indicators/oceans/acidity.html
2. http://www.iiasa.ac.at/web/home/about/news/150203-Ocean-Acid.html
3. http://www.co2science.org/subject/c/summaries/calcification.php
4. http://www.pmel.noaa.gov/co2/story/Ocean+Acidification
5. http://hilo.hawaii.edu/academics/hohonu/documents/Vol09x06OceanAcidification.pdf

January 31, 2016

Fresh Air February!

Join us this February for two great talks on the importance of fresh air. Here is a teaser vid by Marin Science Seminar intern and Terra Linda High School sophomore, Camden Pettijohn. Join us and learn!

Fresh Air February from Marin Science Seminar on Vimeo.

F R E S H A I R F E B R U A R Y

Get the Flyer Here

10: “Sitting by a Cozy Fire – Wood burning, Air Quality & Your Health” with Eric Stevenson of the Bay Area Air Quality Management District

24: “What’s Getting into Your Lungs?: The Effects of Smoke, Ozone, Allergens & More” with Mehrdad Arjomandi of UCSF and the VAMC SF

November 18, 2015

A Tale of Two Tremors: The Nepal Quake and the San Ramon Swarm

by Zack Griggy, San Marin HS

The earthquake is an awe-inspiring disaster that can occur anywhere at anytime where two tectonic plates contact. Tectonic plates make up most of the Earth’s crust and move freely, so they can rub up against, move away from, or compress against other tectonic plates, which results in huge amounts of energy. The place where said actions occur are called faults. Earthquakes are the result of rocks along the fault breaking as the faults move. This releases all the pent-up energy from the tectonic plate movement, and results in a tremor. There have been countless earthquakes recorded, but recently, there have been many events in particular that have attracted a large amount of attention in the seismological community, among which include the San Ramon Swarm and last April’s Nepal Quake.

Destruction from April’s Nepal Earthquake

Since October 15, the town of San Ramon in Contra Costa County, California has been rattled by more than 200 small earthquakes. Thirty of which occurred over two days. The tremors have been small, the largest to date barely reaching 3.2 on the Richter Scale. According to the US Geological Survey, there have been numerous instances of earthquake “swarms,” where numerous earthquakes occur in a close vicinity and in a short period of time. However, the past swarms have occurred over a long period of time, which raised the question of how long this swarm will last. The longest swarm was in the nearby town of Alamo that lasted 42 days with over 350 earthquakes. Residents are concerned about the earthquake swarm but seismologists say that the swarm may be beneficial, because the fault is releasing pent up energy and abating the risk of a large magnitude tremor for years to come.
However, earthquakes are very capable of wreaking havoc into both the developed and undeveloped world. The recent Nepal Quake of last April is an example of the destructive power earthquakes possess. This quake, centered about 85 miles from Nepal’s capital of Kathmandu, was responsible for the death of over 8000 people and the destruction of over half a

A diagram that shows the risk for earthquakes worldwide

million homes. Millions are still in need of humanitarian aid because of this quake and its aftershocks. The quake reached 7.8 on the Richter Scale, which made this tremor more than 800 thousand times stronger than the strongest tremor in the San Ramon Earthquake Swarm. What really raises concerns however, is the realization that a quake like this could happen almost anywhere. According to TIME, the three cities most at risk for a large magnitude earthquake are Tehran, Istanbul, and Los Angeles. These are densely populated cities, and the fallouts of a large earthquake there could be devastating.

Sources:
1. http://www.ktvu.com/news/east-bay-news/32982571-story
2. http://www.sfgate.com/bayarea/article/Small-earthquake-strikes-in-area-of-recent-swarms-6590014.php#photo-8857844
3. http://www.ga.gov.au/scientific-topics/hazards/earthquake/basics/causes
4. http://time.com/3882272/nepal-earthquake-death-toll-2/
5. http://time.com/3838716/earthquake-risk-nepal/

To learn more about earthquakes and the science behind them, attend Dr. Diego Melgar’s presentation on Wednesday, November 15, 2015 from 7:30 – 8:30 at Terra Linda High School, Room 207, 320 Nova Albion Way.

October 22, 2015

Angiosperms: How the Disappearance of Bees Put Flowers At Risk

By Zack Griggy, San Marin HS

Plants are unique organisms. They have unique cell structures, ways of making energy, and reproduction. There are many different kinds of plants, but a category of plants called angiosperms makes up 80% of plants. But some of these angiosperms are at risk, as bees and other pollinators, which are vital to angiosperm reproduction, are disappearing.
Plant reproduction varies among different kinds of plants in two significant ways. The two distinguishing factors that divide the kingdom Plantae are seeding and flowering. Angiosperms are the only group of plants that makes both flowers and seeds.

The various parts of a flower.

Flowers are the reproductive system of an angiosperm. In a flower, two structures in particular play a vital role in plant reproduction. These parts are the pistil and stamen of a flower. The pistil consists of the ovary, the style and the stigma. The ovary is a small are in the bulb of the flower where eggs are stored. Atop the ovary is the style, a narrow region of the pistil that elevates the stigma. The stigma is the tip of the pistil that catches pollen and directs it down a tube so it can fertilize an ovule. The stamen consists of anthers and filaments. The anther rests atop a filament, which is a long narrow structure that supports the anther, and produces pollen, which can fertilize ovules in the ovary. The plant uses pollination to move pollen from the stamen to the pistil. However, the anther is not capable of pollinating on its own, as the pistil and anther are separated by a small distance. Something needs to pollenate the flower, whether it be wind or a pollinating insect, for the plant to be able to reproduce.
Bees are unbelievably important pollinators. According to the Michigan State University, bees play a huge role in the environment by maintaining many plant communities. Many of these pant communities are farmed for food. Most fruits and nuts, along with cotton and alfalfa are maintained by bee populations. We need bees for our food and as our population grows, so will our need for bees.
Unfortunately, the bee population has been declining over the past 50 years. The decline of the bee population is due to many causes, including pesticides, colony collapse disorder (in which worker bees leave their queen and a few young and nursing bees), predators, and carnivorous plants. These causes are serious threats to the bee population and therefore a serious threat to us.
Angiosperms are flowering plants that make up 80% of the plant population. They are at risk because bees, their primary source for pollination are disappearing. This can lead to agricultural problems for humans when bees cannot pollinate all of our crops.

Sources:
http://nativeplants.msu.edu/about/pollination
http://www2.epa.gov/pollinator-protection/colony-collapse-disorder
http://time.com/3821467/bees-honeybees-environment/

To learn more about the disappearance of bees, attend Dr. Amber Sciligo’s research presentation on Wednesday, October 21st at Terra Linda High School, 320 Nova Albion Way, in Room 207 from 7:30 to 8:30.