On the day that NOVA's "Ultimate Mars Challenge" aired, I was invited to attend a modest little gathering held in its honor. It was one of those times when I realized that I was clearly the least ...

Sharks are known to be sensitive to the electrical fields of magnets, but surprisingly, this non-magnetic rare earth metal repels them. NOVA is available to stream on pbs.org and the free PBS App, ...

The asteroid released the equivalent of 10-billion nuclear bombs worth of energy when it struck Earth. The impact started a chain of events that wiped out 75% of all plants and animals at the time.

Join the hunt for the universe’s most common—yet most elusive and baffling—particle. Outnumbering atoms a billion to one, neutrinos are the universe’s most common yet most elusive and baffling ...