Chameleons are some of the most brilliantly colored animals on the planet. But how did they evolve the ability to change color? Scientists used to believe that chameleons changed color by spreading ...

In this video, I introduce a rare chameleon featuring a stunning red and blue color morph. I build its habitat and showcase its remarkable abilities, including a tongue that extends over a foot long ...

But Why – A show for curious kids is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire Tablet, Roku, ...