TechKnow Saturday 5:30pm ET/2:30pm PT

Marita Davison, biologist and communicator. Marita specializes in how human activities affect individual species and the ecosystems they call home. Born in the U.S. and raised in Bolivia, Marita is an expert in ecology & evolutionary biology and has a wide range of experience in science education and communication. She holds an M.Sc. from Cornell University and is the co-founder of CaravanLab, a media lab that works with science organizations. Follow her @MaritaDavison. 2013

Dr. Crystal Dilworth, neuroscientist. Crystal received a Ph.D. in Chemistry from Caltech where she researched the molecular basis of nicotine dependence under the aegis of Professor Henry A. Lester. In her past lives Crystal has been a violinist, a nationally ranked rhythmic gymnast, and a professional dancer/choreographer. Follow her @PolyCrystalhD. 2013

Kosta Grammatis, engineer. Kosta previously worked at SpaceX, the innovative company founded by Elon Musk (TESLA). His areas of expertise include everything from designing and building satellites to creating bionic eyes. Follow him @KGram. 2013

Lindsay Moran, former CIA operative and analyst. The analyst and author of Blowing My Cover: My Life as a CIA Spy is a graduate of Harvard and Columbia and a former Fulbright Scholar. Today, Lindsay is a freelance writer, consultant and commentator on issues related to security and human intelligence; she also serves as a facilitator for scientific consortiums. Follow her on Twitter @LindsayMoran. 2013

Cara Santa Maria, neurobiologist. With a degree in neurobiology and a background in teaching, Cara Santa Maria makes science education fun and accessible. She has appeared on many major news outlets including CNN, The Huffington Post and the Weather Channel. @CaraSantaMaria and see more of her work at CaraSantaMaria.com.

Phil Torres, conservation biologist. His expertise may be entomology, or the scientific study of insects, but Phil's interests are as wide and varied as the vast Amazon forest where he spends many of his days. His scientific discoveries have made international news and been featured on National Geographic, CNN, MSNBC, Wired and more, and he's also appeared on Animal Planet, Discovery Channel, and the BBC. Follow Phil on Twitter @phil_torres and at TheRevScience.com. 2013