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 ...

Walking through a park, you stumble upon a lilac bush. You take in its vibrant purple color, touch its velvety petals and breathe in its fragrant scent. You hear a bee flying nearby before it drinks ...

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, ...