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What can you learn from the fate of USPS?

SAN FRANCISCO A mantra that has driven global negotiations on carbon dioxide emissions for years has been that policy-makers must prevent warming of more than two degrees Celsius to prevent apocalyptic climate outcomes. And, two degrees has been a point of no return, a limit directly or indirectly agreed to by negotiators at international climate talks. James Hansen, director of the NASA Goddard Institute for Space Studies in New York, whose data since the 1980s has been central to setting that benchmark, said today that two degrees is too much.

As delegates gather in South Africa to determine what the world's nations should do about climate change, one might wonder how we're doing?

In the house where Vincenzo Ulturale grew up in Naples, Italy, his parents converted the family living room into a makeshift workshop where they sewed neckwear and taught their son to do the same.

A major government report says that the rate of excess weight and obesity among children ages two to five have doubled since the 1980s. Michelle Miller takes a look at what's being done to stop the trend.

In the 1980s and ’90s, competition in the computer industry was all about "clock speed" — how many megahertz, and ultimately gigahertz, a chip could boast. But clock speeds stalled out almost 10 years ago: Chips that run faster also run hotter, and with existing technology, there seems to be no way to increase clock speed without causing chips to overheat.

By Philip Ball The idea that neglected environments encourage crime and antisocial behavior has been around since the 1980s. [More]

They missed the heavy metal explosion of the 1980s, but this all-girl robotics team from Bronx High School of Science take their name from 80s rockers Iron Maiden. They show off their mechanical talents at a robotics competition in New York

The first new nuclear reactor ordered in the U.S. in roughly three decades is beginning to take shape near Augusta, Ga.