A large new government study should reassure parents who are afraid that kids are getting autism because they receive too many vaccines too early in life.
The study, by researchers at the Center for Disease Control and Prevention, found no connection between the number of vaccines a child received and his or her risk of autism spectrum disorder. It also found that even though kids are getting more vaccines these days, those vaccines contain many fewer of the substances that provoke an immune response.
There's a mystery in West Africa that's puzzled scientists for years. Strange circles of bare soil appear in grassland; they're commonly called "fairy circles." These naturally occurring shapes last for decades, until the grass eventually takes over and the circles fade.
Now German scientists think they have an explanation — a horde of insects seems to be bioengineering thousands of miles of desert.
Police in Europe are investigating a large-scale cyberattack. Some are even calling it the largest of its kind. As NPR's Martin Kaste reports, the attack's target is an organization called Spamhaus, but the effects have spilled out into the broader Internet.
A worker stands on top of a storage bin on July 27, 2011, at a drilling operation in Claysville, Pa. The dust is from powder mixed with water for hydraulic fracturing.
Credit Steve Karnowski / AP
Dust blows off a pile of fracking sand at a mine near Chippewa Falls, Wis., on Dec. 15, 2011. Some of the air samples the National Institute for Occupational Safety and Health experts collected at fracking sites had such high levels of silica that the respirators typically worn by workers wouldn't offer enough protection, according to NIOSH standards.
Credit Keith Srakocic / AP
A local contractor closes the valve on his tanker truck on July 27, 2011, after watering the roads to help keep down dust at a hydraulic fracturing operation in Claysville, Pa.
When workplace safety expert Eric Esswein got a chance to see fracking in action not too long ago, what he noticed was all the dust.
It was coming off big machines used to haul around huge loads of sand. The sand is a critical part of the hydraulic fracturing method of oil and gas extraction. After workers drill down into rock, they create fractures in that rock by pumping in a mixture of water, chemicals and sand. The sand keeps the cracks propped open so that oil and gas are released.
Originally published on Fri April 26, 2013 11:59 am
What had earlier been widely billed as the largest cyberattack in history, causing Web-wide disruptions for Internet users, appears on closer inspection to have been not quite so dramatic as first thought. But what did it mean for the innocent bystander sitting at his or her computer?
Probably not much, as it turns out — particularly if that bystander's computer wasn't in Europe.
A woman views a Mitt Romney campaign ad in September, a month after the launch of an online government database that is supposed to make it easier for the public to see what political ads air in big markets, and how much is spent on them.