The Earth is made up of plenty of elements but Chromium is uncommon. This has scientists puzzled.
Scientists have reconstructed a one hundred thousand-year history of carbon dioxide.
Canadian researchers have found evidence that coal may have contributed to the disaster that killed off the dinosaurs.
Greenland's ice sheet is worrying scientists. It's melting.
Death Valley has many mysteries, including one of nature's strangest phenomena: rocks that move on their own.
What happened to the lava at Mount Rainier? Why is the story so unusual?
There's a mystery happening along the slopes of Mount Rainier in Washington State.
Why is the Middle East the place to find oil?
Could a fire department stop a volcano? Learn about the town of Vestmannaeyjar and their brave firefighters who battled a volcano.
When volcanoes erupt underwater, do the waves and ocean currents help calm the eruption?