Geological Sciences

Dated as old as the dinosaurs

An analysis of mineral grains from the bottom of the western Grand Canyon indicates it was largely carved out by about 70 million years ago -- a time when dinosaurs may have even peeked over the rim, says a study led by the University of Colorado Boulder.

Aftershock: Japan one year after the Tohoku earthquake

At 2:46 p.m. local time on March 11, 2011, the east coast of Japan was rocked by a magnitude 9.0 earthquake.

"The invisible connectedness of things" reveals how transportation choices impact air quality

 

Did the Little Ice Age start with a big bang?

Scientists have disagreed for many years over the precise cause for a period of cooling global temperatures that began after the Middle Ages and lasted into the late 19th century, commonly known as the Little Ice Age. 

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