Credit NASA, ESA, C.R. Robert O'Dell, G.J. Ferland, W.J. Henney and M. Peimbert
The Ring Nebula, whose iconic shape and large size make it a favorite of amateur astronomers, can now be seen in new detail, after NASA's Hubble Space Telescope captured a sharp image of the nebula. Researchers say the new clarity reveals details that were previously unseen, and a structure that's more complex than scientists had believed.
Former Guatemalan President Alfonso Portillo has been extradited to the United States, where he faces charges of laundering tens of millions of dollars through U.S. banks.
Portillo, who served as president from 2000 to 2004, was snatched from a hospital bed in Guatemala City, where he was recovering from liver surgery. He was placed on an airplane bound for New York, according to his lawyer, Mauricio Berreondo.
Scientists say climate change could increase pests and weeds, lengthen growing seasons and turn dry soil to dust. Farmers are already on the offensive, adopting no-till cropping methods to conserve water and experimenting with different seeds. And scientists are using a technique called gene silencing to develop new crops--without tinkering with the plants' DNA.
Last year scientists reported that a skin cancer drug appeared to reverse the effects of an Alzheimer's-like disease in mice. But four studies out this week in Science question the original results. Ronald Petersen, director of the Mayo Clinic's Alzheimer's Disease Research Center, talks about the new findings, and the hunt for Alzheimer's drugs.
The Federal Trade Commission is in the early stages of opening an antitrust probe into how Google runs its online display advertising business, according to a report by Bloomberg News, citing sources who want to remain anonymous because the FTC has not announced the probe.
A lot of things about grilling can ignite a fight, including the meaning of "barbecue." And with the proliferation of fancy equipment — from gas grills to pellet smokers to ceramic charcoal cookers — amateur cooks are growing more knowledgeable, and opinionated, about how to best cook food outdoors.