A unique material sucks CO2 from the air
Alterations in the rock formations' growth in Indiana cave could provide clues about past earthquakes in the Midwest.
An undergraduate college student may have found a way to warn people up to 30 minutes in advance that a tornado is on the way.
Clues hidden in leaf fossils reveal shift to vegetation that smolders rather than flares.
"Young" rocks from gigantic volcanic eruptions are helping scientists peer back 4.5 billion years.