Sex isn't nearly as binary as you think it is.
Online archives let you get inside the great biologist's head
British soldiers who were captured by the Germans during the Battle of France dreamed about lots of food, and not that much violence.
Check out some of the most important research in any field at a glance
Stories of reindeer, walruses, and Mars simulations
The tale of the "plant hunters," farming whales, vegetable matter that rains from the sky and more
Franklin is all about energy and climate, as well as interplay between the two. Today, it's hunting for fossil fuels--and considering the consequences of burning them
Domed glass cities, schools within skyscrapers, rocket-ship neighborhoods and more as we cruise through the complete PopSci archive in search of the perfect urban life
Bogus canals on Mars, alien germs from Venus and the "truth" behind UFOs
On the 40th anniversary of Earth Day, we take a look back at where it all began