Suzan Murray, Chief Veterinarian at the National Zoo, describes her childhood dream of becoming a veterinarian and makes a special trip to visit her favorite elephant, Shanthi.
Did natural selection favor darker skin tones? Professor Nina Jablonski never believed that cancer could have an effect on the evolution of skin color, and new research may prove her right.
The last name gives it away; Carla Dove's area of expertise is ornithology. As a forensic ornithologist she aims to make the skies a safer place for birds and planes.
For planetary geologist Sharon Wilson Purdy, life on Earth sparked an interest in life on Mars. Her ongoing research could one day answer the question: Is there life on Mars?