For several days this month, Greenland's surface ice cover melted over a larger area than at any time in more than 30 years of satellite observations. Nearly the entire ice cover of Greenland, from its thin, low-lying coastal edges to its two-mile-thick center, experienced some degree of melting at its surface, according to measurements from […]
Caltech researchers provide highest-resolution observations yet of the complex 2012 Sumatra earthquake
Global emissions of carbon dioxide (CO2) – the main cause of global warming – increased by 3% last year, reaching an all-time high of 34 billion tons in 2011. In China, the world's most populous country, average emissions of CO2 increased by 9% to 7.2 tons per capita.
A team of archaeologists led by Stephen Houston has made a new discovery at the Maya archaeological site in El Zotz, Guatemala, uncovering a pyramid believed to celebrate the Maya sun god. The structure's outer walls depict the god in an unprecedented set of images done in painted stucco. In 2010, the team uncovered a […]