This artist's conception illustrates Kepler-22b, a planet known to comfortably circle in the habitable zone of a sun-like star. It is the first planet that NASA's Kepler mission has confirmed to orbit in a star's habitable zone — the region around a star where liquid water, a requirement for life on Earth, could persist.
Scientists have discovered a planet not too much bigger than Earth that's circling a distant star that's much like our own Sun. What's more, this planet is in the so-called "Goldilocks zone" around that star — a region that's not too hot and not too cold. That's the kind of place that could be home to liquid water and maybe even life.
The planet, known as Kepler-22b, is the first near-Earth-sized planet to be found smack dab in the middle of the habitable zone of a twin to our Sun.
A little-noticed trial in Maryland could affect how many dirty tricks voters will see in the upcoming elections — things like anonymous fliers or phone calls telling people to vote on the wrong day, or in the wrong precinct, or that they can't vote at all if they have an outstanding parking ticket.
The tactics are often illegal, but it's rare for anyone to get caught, let alone end up in court.
Credit Alexander Gardner / National Portrait Gallery, Smithsonian Institution
Alexander Gardner photographed President Abraham Lincoln in Washington, D.C., on the eve of his second inauguration. It was the last portrait taken of Lincoln before his assassination in April 1865 and it appears on the cover of The Atlantic's commemorative Civil War issue.
Credit Emanuel Gottlieb Leutze / National Portrait Gallery, Smithsonian Institution. Gift of the A.W. Mellon Educational and Charitable Trust
Nathaniel Hawthorne's ambivalence toward slavery put the writer at odds with much of New England's literary community, including the editors of The Atlantic.
Credit National Portrait Gallery, Smithsonian Institution
During an 1863 medical exam at a Union camp, an escaped slave known only as Gordon was found to have horrific scarring on his back, the result of whippings he had received from his former overseer.
Today it is widely understood that slavery is a stain on American history — indelible and regrettable. But on the 150th anniversary of the beginning of the Civil War, a new issue of The Atlantic magazine reaches back to a time when this matter wasn't yet settled, and monumental questions were still up in the air: Would slavery continue? Would America remain united?
Originally published on Wed December 7, 2011 9:49 am
Hidden in the soil of Illinois and Iowa, a new generation of insect larvae appears to be munching happily on the roots of genetically engineered corn, according to scientists. It's bad news for corn farmers, who paid extra money for this line of corn, counting on the power of its inserted genes to kill those pests. It's also bad news for the biotech company Monsanto, which inserted the larvae-killing gene in the first place.
When businessman Herman Cain left the Republican presidential race over the weekend, he said he would endorse one of his former rivals.
One likely recipient of that endorsement: Former House Speaker Newt Gingrich. Like Cain before him, Gingrich is trying to establish himself as the conservative alternative to former Massachusetts Gov. Mitt Romney. And Cain and Gingrich share a long history of mutual admiration.