In the US and Europe, honey bees that pollinate one-third of our crops are succumbing to the mysterious colony collapse disorder. Many possible causes have been identified, but a pair of papers published in this week's Science points the finger at the neonicotinoid family of insecticides.

Some 2.7 billion year old raindrop imprints are helping researchers wrestle with the “faint young Sun paradox,” helping to explain why the Earth was warm despite a significantly cooler sun.

The booms and shaking reported by residents of Clintonville appear to have been caused by earthquakes. So why do earthquakes sometimes occur in such surprising locations?

A new report published by the Organisation for Economic Co-Operation and Development paints a grim picture of the world in 2050 based on current global trends. It predicts a world population of 9.2 billion people, generating a global GDP four times the size of today's, requiring 80 percent more energy.