Lightning seems purely destructive, but it, like water, is essential for life.
Instead of relying on their textbooks, students are learning about evolution by watching bacteria grow and change.
Dr. Cornelius Hunter has more to say about 22 basic predictions of evolutionary theory.
A chemist like Tour, a very distinguished one, knows from a career’s worth of lab work how painstakingly difficult it is to synthesize molecules you want.
Olfactory receptors squeeze more data out of odor molecules than previously thought.