Your brain can play tricks on you with colors. Learn what red, blue and yellow can do to your appetite. Science Trek is available to stream on pbs.org and the free PBS App, available on iPhone, Apple ...

Growing up, most of us learned about the five senses: sight, hearing, smell, taste, and touch. But it's time to rewrite the science textbooks – at least if one scientist has anything to do with it.

Some animals have more than five senses or have stronger senses than humans. How do these special skills help them survive? Science Trek is available to stream on pbs.org and the free PBS App, ...