Category: shoshana harlem

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Name that Bloodsucker! Interview with Eric Engh

by Shoshana Harlem, Terra Linda High School

Eric Engh, an insect ID Specialist, works for the Marin-Sonoma Mosquito Vector. He also runs educational programs for the Marin-Sonoma Mosquito Vector. He has a Bachelor’s degree in Environmental Studies and an M.S. in Entomology from University of Florida.
1. What made you want to study insects?
 I have been interested in insects ever since I was a small child. I was also really lucky to have an excellent mentor- Ron Keith. He was our Vector Ecologist for Marin/Sonoma Mosquito and Vector Control District for over 30 years. Not only did he teach me much about entomology, he excelled at explaining information in a friendly and simple manner without making the listener(s) feel stupid. In the 5 years that I got to work with him, I got to see him help hundreds of people with their entomological inquiries.

2. What are the best parts of your job? What are the worst?
I don’t really have any complaints about my job. I enjoy teaching about entomology, developing curriculum and interactive displays for public events, and I really enjoy being a resource of information for the public. The most difficult part of my job has to do with people who are convinced that some unseen insect is biting/infesting them, but there is no concrete evidence to support this. There are many causes of skin irritation similar to an insect bite that include but are not limited to: environmental sensitivities, allergies, reactions to various chemicals or medications, mental conditions, etc.. These cases can be very difficult because the person is absolutely convinced they have an insect infestation, and they often have already been turned away by doctors, family members etc., and are extremely frustrated. I can identify insects, but in these cases there is little I can do to help, and resources available for people with these problems are scarce.

3. How can people protect themselves from being bit by mosquitos?
There are many things people can do to protect themselves from mosquitoes:
Wear EPA approved mosquito repellent while spending time in areas where mosquitoes are present.Search around your home for any source of still water where mosquitoes may breed. Dump out small amounts of water that accumulate in items that don’t require water (buckets, toys, junk, etc.), rinse out items that require small amounts of water (bird baths, pet water dishes, etc.) at least once a week. Don’t ignore mosquito problems! Call the Marin/Sonoma Mosquito and Vector Control District for help locating unknown sources of mosquitoes or to help with a mosquito-related problem that you cannot resolve on your own.

4. What should people do if they get bit by a mosquito?
The most important thing to do is to not make the problem worse by itching the bite site and scratching open the skin, which invites infection. There are over-the-counter products that are commonly available to help reduce itching sensation, or if someone has a serious reaction to a bite, they should consult a doctor.

5. What current projects are you working on?
I am currently working to create a curriculum for local vectors (mosquitoes, ticks, yellow jackets), that reinforces the Next Generation Science Standards. We provide an education program to schools, and we are trying to make it interesting, useful and informative. We are also involved in a number of other projects including surveillance for invasive species of mosquitoes.

Want to learn more about Eric Engh and mosquitos? Join us on Wednesday, October 11, 2017 at Terra Linda High School from 7:30 PM – 8:30 PM in Room 207!

Learn more at: http://msmosquito.com/


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Mathematical Models Help Tell the Future of Animals That Are Living in the Ocean

by Shoshana Harlem, Terra Linda High School

The future of animals in the ocean is unknown. But,
mathematical models can help scientists predict 
information about the circumstances of animals lives in the ocean.

The future of our oceans and the future of the animals living is unpredictable. This is where scientists use math to figure out what is going to happen. Changes in temperature affect animals living in the water. The temperature of the water determines which animals will do well in the water and thrive, and which will struggle, die, and become extinct. There is a range of temperatures an organism can survive in. Each organism has a thermal death point. Certain temperature ranges help an animal reproduce and have more of one organism. There is a range in which species can function which is at or near optimum. When the species are not at or near their optimum point, it is a sign of physiological stress which can cause problems in the organism.

Scientists, including graduate students, researchers, and post-docs in the life sciences and mathematics, often use mathematical models. A mathematical model is a complex model that represents relationships in mathematical form that is used to study the behavior of a certain organism to make reasonable conclusions. Mathematical models can solve problems relating to biology and many other fields.

Scientists, such as Alma Yesenia Ceja who is
speaking at the next seminar, studies and will
talk about what data she finds through mathematical
models about the future lives of crabs.
To learn more about how scientists use math to predict the future of crabs and other animals, come to the Marin Science Seminar in room 207 on Wednesday, March 29, 2017. Alma Yesenia Ceja of the Romberg Tiburon Center for Environmental Studies and SFSU will be speaking. Join us and learn!

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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!
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The Intelligent Sea Lion

The Intelligent Sea Lion
By Shoshana Harlem, Terra Linda High School


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!

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An Interview with Dr. Tobias Marton – MSS Speaker 11/9/16

By Shoshana Harlem, Terra Linda High School

Did you know that each year about 20 million people in the United States get diagnosed with depression? Worldwide, more than 350 million people suffer from depression. Depression is a mental illness where a person’s sadness lasts more than two weeks. Depression can lead to all sorts of problems including suicide. Dr. Tobias Marton, Assistant Professor at UCSF, studies and helps people who suffer from depression.

In advance of his talk at TLHS, he provided the following information:

1. What made you become interested in being a Psychiatrist and studying depression?

 I became interested in medicine and biology during my junior year of high school while taking AP biology and harboring a mild obsession with the hit TV show ER. Prior to then, I really hadn’t thought too much about becoming a scientist or doctor and was actually much more interested in history and music. The summer between my junior and senior year I was able to get an internship working at a local biotech company that studied genes relevant to neurobiology, and from then on I became very interested in the complexity of the brain. I worked in a couple of different neurobiology research labs during my undergraduate years at Berkeley while taking my premed courses and knew I wanted to practice medicine in either neurology or psychiatry because they both involved different aspects of brain function. It became clear to me during medical school that I was a natural fit for psychiatry because I really enjoyed talking to people and trying to understand their stories and how they came to be who they are today, in addition to having a good temperament in sitting with patients that can pose behavioral challenges.

My interest in studying and treating depression really developed during my psychiatry residency. Depression is very common across all age groups, genders and socioeconomic groups and it’s also a leading cause of suicide in the United States. Many mental health professionals regard the current situation with depression and suicide in the U.S. as a public health crisis, and yet it’s not an illness that we as a society are comfortable discussing and addressing in the open, like we do with other diseases such as cancer and heart disease. We’ve made considerable advances in the last decade in our understanding of the brain and how it changes during depressive illness. These insights are starting to generate new treatments that I am excited to help bring to our patients and their families.

2. What is it about your work that led, you to be given the National Institute of Mental Health Outstanding Resident Award in 2012? 

The National Institutes of Mental Health (NIMH) are very committed to supporting psychiatrists with scientific training in developing a career as a physician-scientist in order to help bring new treatments to patients struggling with mental illness. Based on the quality of my PhD work, I was identified by the NIMH during my residency as someone whom they wanted to support and encourage to continue in psychiatric research.


3. What are the hardest parts of your job?
At a very basic level, the practice of medicine is to sit with, and help alleviate, human suffering on a daily basis. For most physicians, this is the very reason we chose a career in medicine and feel it is a great privilege to be present with a patient and family during times of suffering. That being said, this can be an emotionally and physically exhausting line of work. To have a sustainable career in medicine and avoid burnout, it’s really important to have a balanced, positive and rejuvenating life outside of the hospital. Finding that balance on a daily basis is crucial to one’s personal job satisfaction and happiness and is also a constant challenge to maintain.

4. What kind of research are you currently working on?
Currently I am working on publishing some research I conducted during my research fellowship which used optogenetic technology to study the neural circuitry of the prefrontal cortex in mice during a cognitively challenging task. I am also getting started now on a project at San Francisco VA with Dr. Wallace (former Marin Science Seminar speaker) which will investigate the effects of ketamine administration on blood flow to prefrontal cortex in patients with treatment-resistant depression.
5. What advice would you give to people who are suffering from depression?

The biggest challenge mental health professionals face in treating depression and preventing suicide is that many people suffering from depression and suicidal thoughts never seek help. The important thing to know is that there are many effective treatments available that can really help people feel better and like their best selves again, so there is no need to continue suffering in silence. Seek help! Recovery is very possible but only if you make the first step to reach out for help – this first step could include talking to family members, counselors, teachers or your primary physician who can then start the referral process to a mental health professional. You can always call the National Suicide Prevention Lifeline at 1-800-273-8255 which is staffed 24 hours/day. The National Alliance on Mental Illness (NAMI – www.nami.org) is also a great organization with many resources available on line and in person.

Join us for his free Marin Science Seminar talk on Wednesday, November 9th, 2016, 7:30 – 8:30 pm at Terra Linda High School, Room 207, 320 Nova Albion, San Rafael, California

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