Music and speech

Music and speech

Most music is built on the 12-tone “chromatic” scale. Does this reflect chance, or the basic structure of the human voice? New study More »

Tornadoes: Power & Fury

Tornadoes: Power & Fury

Tornadoes kill 60 Americans each year. How do we predict tornadoes? How do we make houses safer? Where do tornadoes get their energy? More »

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 »

Asteroid Threat

Asteroid Threat

How bad is the asteroid threat to Earth, and what are they doing to find any killer asteroids out there? 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 »