Volcano Overdue at Yellowstone?

Volcano Overdue at Yellowstone?

Giant volcano at Yellowstone erupts on schedule. The last eruption covered about 20 states with ash. If Yellowstone blows, think big! More »

Killer Asteroids: Ultimate Impact

Killer Asteroids: Ultimate Impact

New searches are finding lots of asteroids. None of them are aimed at us — yet. How much damage have asteroids done in the past? More »

Walk on Water: How Spiders Do It

Walk on Water: How Spiders Do It

So what’s the deal with the simple water spider? This eight-legged marvel speeds across the water fast, but how does it move? More »

Radio Astronomy

Radio Astronomy

New, large radio telescope gets better view of the universe. Want to tune in? More »