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Question 3 transcript:
"We just recently discovered that by looking at echolocation signals from wild dolphins that they have a form of automatic gain control or a form of time varying gain. Now they do it very different than our sonar would do it. In technological sonar, time varying gain usually occurs with the receiver, where the gain of the receiver is increased as a function of time. But with the dolphins, what happens is that they control their level of their emissions so that as they close in on a target, they reduce the amplitude of their signal, so that they try to keep the amplitude of the echo relatively constant."

1. How did you first become interested in science?
2. What is the focus of your research and why did you choose this field of study?
3. What have been some of the recent discoveries in echolocation by marine mammals?
4. How do you study echolocation?
5. What challenges have you faced in studying the echolocation of dolphins?
6. What has most surprised you about the echolocating abilities of dolphins?
7. What skills are important in your area of research?
8. What are the opportunities in the studying echolocating abilities of dolphins? Can people without PhD's participate in some way in this type of research?
9. What is the greatest impact/relevance of your research?
10. What continues to inspire you about your work?
11. What advice would you give a high school student who expressed an interest in pursuing a career in your field?