Eight frames showing an artist's concept of a simple round body that's struck, and whose fragments then fall back to it.

Asteroids are harder to destroy than we thought

What if we learned an asteroid was headed toward Earth? How much energy does it take to destroy an asteroid and break it into pieces? More than we thought, it turns out.

A huge black bee next to a honeybee

Found: World’s biggest bee

Last seen in 1981 and thought lost to science, Wallace’s giant bee has been rediscovered in the forests of Indonesia.

Bees change scent as they age

A new study finds that honey bees develop different scent profiles as they age, and guard bees respond differently to returning foragers than to younger bees who’ve never ventured out.

The ozone hole: Closing the gap

After thinning at alarming rates in the 1980s and 90s, the ozone layer over Antarctica is starting to recover.

Florescent green aurora. Sky criss-crossed with wires and telephone poles.

Watch: Aurora borealis over HAARP

Never-before-seen footage of night skies over the HAARP antenna array in remote northern Alaska.

5 things about radiation donuts, in 2 minutes

Did you know that our planet has radiation donuts? These giant, donut-shaped clouds of radiation are called the Van Allen Belts.

Rover spacecraft on reddish-brown landscape

Mars Opportunity rover ends its mission

The Mars Opportunity rover, built to last 90 days, has ended its mission after 15 years on the red planet.

How animals love

“The animal world tells us again and again and again that love is really important.”

Another huge impact crater under Greenland ice?

A glaciologist has discovered a possible 2nd impact crater buried under more than a mile of ice in northwest Greenland.

Today in science: Spacecraft destroys sundog

When a NASA spacecraft lifted off from Cape Canaveral on February 11, 2010, it destroyed a sundog in Earth’s atmosphere – bringing to light a new form of ice halo – and teaching those who love the sky something new.