A snake flicks its tongue. While we humans use our tongues for taste, a snake’s tongue has a different purpose.

The largest agricultural boom on the planet threatens to destroy a spectacular savanna. Here's what happens when progress ...

The number of monarch butterflies spending the winter in the western United States has dropped to its second-lowest mark in nearly three decades as pesticides, diminishing habitat and climate ...

MADISON, Wis. (AP) — The number of monarch butterflies spending the winter in the western United States has dropped to its second-lowest mark in nearly three decades as pesticides, diminishing ...