Saturday, July 31, 2010 06:52:57 UTCSaturday, July 31, 2010 10:22:57 AM at epicenterDepth: 22.40 km (13.92 mi)

Saturday, July 31, 2010 04:28:22 UTCSaturday, July 31, 2010 02:28:22 PM at epicenterDepth: 49.80 km (30.94 mi)

By Leigh Coleman [More] Gulf of Mexico - Mississippi - BP - Oil well - Offshore drilling

Political stalemate means the world’s largest historic contributor to the greenhouse gas problem faces international talks—again--without a plan. United States - Greenhouse gas - ...

Editor's Note: Scientific American's George Musser will be chronicling his experiences installing solar panels in Solar at Home (formerly 60-Second Solar). Read his introduction here and see al...

By Anna PetherickOccasionally, researchers stumble across something extraordinary in a system that has been studied for decades.Ryan Kerney of Dalhousie University in Halifax, Nova Scotia, Canada, ...

Just six months ago residents of the eastern U.S. were shoveling themselves out of the snowiest winter ever--weather that prompted mockery of global warming among some people . Now, scientists hav...

The space weather phenomenon swirls auroras and can spawn magnetic "twisters" that can knock out power lines, a new study says. Earth - Atmosphere of Earth - Aurora - Solar System - A...

When a magnitude 8.8 earthquake struck Chile on February 27, residents and seismologists knew it was a big one. But a new analysis reaffirms just how massive it was. [More] Chile - ...

This year's Perseid meteor shower on August 11-14 is predicted to be one of the best in recent years, and if this awesome trailer from "MeteorWatch" organizer Adrian West doesn't get you ...