A cockroach species in Hawaii called the Pacific beetle cockroach can actually give milk. This isn't the only thing this cockroach has in common with mammals, either. It also gives birth to live young.

Have you ever seen a perfectly cloudless sky?  Cloudless--that is--except for two or three long white lines smeared across the perfect blue sky by airplanes like smudges on a pane of glass.

Today's Moment of Science is about a galaxy called UGC 1382. For a long time, scientists thought it was a fairly small, run-of-the mill galaxy, but then they realized it actually had huge spiral arms.

If you're lucky enough to live where it's sometimes windy and cold, you've probably heard your weatherperson give out two temperatures:  the actual temperature outside, and a temperature based on the wind-chill temperature index.

German scientists studying young beeches and maples knew plants responded to predation, but they wanted to know if plants could tell the difference between a deer chewing their leaves verus being damaged by other factors like storms, or being trampled upon.

Why does the sunset take more time than the sunrise? It takes much less time for the sun to light up the sky at dawn than it does for all the light to disappear after the sun sets at dusk.

Why do some kids become bullies or the victims of bullies? How closely is this linked to how their parents raised them?

Scientists have discovered evidence of another ancient asteroid impact, but not the one that killed the dinosaurs. This asteroid is much, much older than that.

A lot of doctors have been stumped by slim patients showing signs of high blood pressure, high cholesterol and Type 2 diabetes. They'd see or hear about someone who had all of these conditions associated with excess fat, but who didn't have an ounce of extra fat on their bodies.

In 1967 a team of astronomers in Great Britain thought they had found extraterrestrial intelligence. They discovered radio sources in deep space that produced pulses of energy at very precise intervals ranging from milliseconds to seconds.