Sexuality and gender play a profound role in shaping identity, but for much of human history how they are determined has remained obscure. How does sexual orientation develop? What is it? Can it be changed?

Food scientist Amanda Kinchla’s innovation happens in the lab…and in the kitchen as she uses science to create new and nutritional foods and food safety solutions. Episode filmed live at …

We have fallen woefully behind in the race to keep up with harmful bacteria as they continually evolve to outsmart our antibiotics, in fact, there are already superbugs we cannot …

This video is part of our Brilliant Breakthroughs series: our new 20-episode mini-series exploring the “Eureka!” moments and proud accomplishments of the greatest scientific minds of our time. Join us …

After a storied career with 5 spaceflights (including three trips to fix the Hubble Space Telescope), NASA astronaut John Grunsfeld now helms the space agency’s scientific missions. He helps shepherd …

The prestigious biennial Kavli Prizes recognize scientists for major advances in three research areas: astrophysics, nanoscience and neuroscience—the big, the small and the complex. The 2014 winners, sharing a $1 million award in each field, will be announced live via satellite from the Norwegian Academy of Science and Letters in Oslo.