But before the mid-1800s, wild squirrels didn't live in U.S. cities at all. That changed in the latter part of the century, ...

Cockroaches are pretty amazing creatures. They lead complex social lives, have unique person alities and most species of the ...

I always had a double chin. It looked like my dad’s; he calls it the “ol’ Griggs gobble gobble.” It didn’t bother me as a kid ...

What gives? To understand why apples brown and the best ways to keep them from changing color, we consulted a food scientist.