Explosive breeding brings frogs and salamanders together in vernal pools for a brief, frantic window. Learn how it works.

When winter changes to spring, you may feel the onset of pollen allergies, and you may also have changes to your sleep habits ...

Add Yahoo as a preferred source to see more of our stories on Google. Savannah Guthrie during an NBC interview that aired on March 25, and Savannah Guthrie and Nancy Guthrie on the "Today" show set in ...

It’s very much like the case of a caddisfly larva: pieces of plant material – usually lichen, bark fragments, stems or seeds – are sewn together to form a protective shroud in which the vulnerable ...