Scientists have discovered water that has been trapped in rock for more than a billion years. The water might contain microbes that evolved independently from the surface world, and it's a finding that gives new hope to the search for life on other planets.
The water samples came from holes drilled by gold miners near the small town of Timmins, Ontario, about 350 miles north of Toronto. Deep in the Canadian bedrock, miners drill holes and collect samples. Sometimes they hit pay dirt; sometimes they hit water, which seeps out from tiny crevices in the rock.
On a sunny spring day in eastern Afghanistan's Paktia province, Afghan officials and U.S. troops and civilians gather inside the ancient mud fort in the center of Forward Operating Base Gardez. They're attending a ceremony marking the formal end of the work of the provincial reconstruction team, or PRT.
President Obama announced late Wednesday that the acting commissioner of the Internal Revenue Service, Steve Miller, has resigned in the wake of a report that employees at the agency engaged in partisan scrutiny of conservative groups seeking tax-exempt status.
The president, appearing for a brief statement at the White House, said he had directed Treasury Secretary Jack Lew "to accept the resignation of the acting commissioner of the IRS."
The Justice Department's subpoena of Associated Press phone records as part of an investigation into what Attorney General Eric Holder has called "a very grave leak" to the news agency has set off a political firestorm on Capitol Hill, but there's a lot to the AP story published a year ago that started it all.
Astronomers said Wednesday that a reaction wheel that keeps the orbiting telescope pointed at tiny, distant patches of sky to look for Earth-like planets has failed. If they can't fix it, Kepler will be relegated to a less prestigious mission, directing its gaze much closer to home in a search for so-called "near-Earth objects," i.e., meteors and asteroids.
A new rifle goes on sale on Wednesday, and it's not like any other. It uses lasers and computers to make shooters very accurate. A startup gun company in Texas developed the rifle, which is so effective that some in the shooting community say it should not be sold to the public.