Was the Tully Monster - which left behind one of the strangest fossils ever discovered - a vertebrate or an invertebrate? The mystery continues.

Scientists have linked melting Arctic sea ice to the emergence of a deadly virus among sea lions, ice seals, sea otters and other marine mammals.

Masting is what biologists call the pattern of trees for miles around synchronizing to all produce lots of seeds – or very few. Why and how do they get on schedule?

Scientists have created a recording of the eerie ‘song’ that Earth sings when it’s hit by a solar storm.

Scientists say they've solved the geologic mystery of the Nile River’s unchanging path, and also discovered the river is about 30 million years old - 6 times older than previously believed.

Using a spray bottle to simulate rain, researchers found a "panic-like" response in plants. Complex chemical warning signals were passed from leaf to leaf and even communicated to other plants.

Scientists have discovered that certain microbes get energy from electrical charges. What’s more, it turns out that these microbes are very common.

You've heard of panspermia, the idea that life exists throughout space and was carried to Earth by comets? What if the reverse occurred, with microbes on Earth ejected into space by asteroid impacts, escaping into the solar system billions of years ago?

Fossils suggest that a long-extinct cousin of today’s rhinoceroses tromped through the forests of Northwest Canada roughly 8 to 9 million years ago.

Scientists recently studied the formation of the huge crystals inside the giant geode of Pulpí, located deep in a Spanish mine. They revealed the natural process that grew the crystals, ripening them over thousands of years and making them literally crystal clear.