Continental connection: North, South America linked much earlier than thought

The American continents were joined 10 million years before the accepted date. What does this say about life in the Americas? More »

Melting Antarctic ice, rising seas: What can we expect?

What happens as temperatures rise? A computer model and satellite radar offer the same chilling conclusion: Antarctic ice is melting. More »

As scientists find new surprises in Apollo’s 40-year-old rock collection, gravity studies by an over-achieving satellite duo provide a More »

The biggest asteroid to strike land in 105 years sheds light on where space rocks come from, how many more might hit us, and what we More »

A faint smudge — with the dark red insignia of super-old light — distinguishes the oldest galaxy ever seen. The old gal was active in More »

In 2011, a suicidal comet brushed the sun — showing a swirling magnetic field, the source of dangerous “space weather.” What did we More »

Geologic dating shows that water has been trapped more than 2 kilometers underground since before the Cambrian explosion. This water More »

How do scientists predict an eruption? Watch volcanologists track a giant, active volcanic field in Chile’s Andes Mountains. More »

After an asteroid strikes, meteorite hunters go to work. What are the rules when you are looking for a hunk of outer space! More »

A long debate about these giant ice streams has gyrated wildly. Now, satellite data show a moderate loss of mass for a recent six-year More »

Take a modern volcano, and multiply it by 1,000. That’s a super-volcano. Their rare eruptions change landscapes and weather. How long More »

Volcanic eruptions are unpredictable, but here’s a new view of the historic eruption of a Mediterranean monster. About 3,500 years ago, More »

Seismic study shows crust thinning as continent divides, giving another view of our restless planet. More »

With space shuttles in museums, the near-term American plan to return to space relies on other countries or private firms. More »

A new report on the ancient universe shows that most galaxies – even all of them – had a black hole at the center, much like modern More »