Militiamen from the Ansar Dine Islamic group, an al-Qaida affiliate, ride on a vehicle in northeastern Mali in June. Mali is one of the places where al-Qaida-linked groups are trying to take over territory and win over local residents to their cause.
Members of Ansar al-Sharia, another al-Qaida-affiliated group, man a checkpoint at the southern Yemeni town of Jaar in April. Government troops recently retook areas in the country's restive south from militant control after a two-month offensive.
Al-Qaida has been subtly testing a new strategy. In the past couple of years, the group's affiliates have been trying their hand at governing — actually taking over territory and then trying to win over citizens who live there. It happened with various degrees of success in Somalia and Yemen, and recently in the northern deserts of Mali.
In this Aug. 2, 2011 file photo, the bottom of the pond at the Gene Howe Wildlife Management Area is nearly dried up in Amarillo, Texas. A devastating drought across Texas turned rivers into sand, creeks into mud, springs into mere trickles and lakes into large puddles.
Coal miner Lee Hipshire in 1976, shortly after emerging from a mine in Logan County, W.Va., at the end of his shift. A few years later, Lee took early retirement because of pneumoconiosis, or black lung disease. He died at 57.
NPR and the Center for Public Integrity (CPI) have learned that the Mine Safety and Health Administration (MSHA) and the Labor Department are putting together a team of agency experts and lawyers to specifically consider how to bolster coal mine dust enforcement given the statutory and regulatory weaknesses detailed by NPR and CPI this week in stories about the resurgence of black lung.
When McDonald's cut a deal to make itself the exclusive purveyor of french fries and the similar (but please don't say matching) chips at the 2012 Olympic Games in London later this month, it may not have anticipated the flurry of responses. Foodies raged, nutritionists nagged, and many called it another example of an American cultural takeover.
This is SCIENCE FRIDAY. I'm Ira Flatow. If you're out shooting hoops this summer or you're going for a jog, you know it won't be long before you're sopping wet and, you know, it's really sweaty out there. And where's all that sweat coming from? Your body's water supply, of course. You have to replenish those fluids if you sweat a lot. But it's not as simple as the old eight-glasses-a-day mantra. How much should you really drink? Too much water, you can die, as has happened to marathon runners who chugged too much water during the race.
Reporting in Science, two teams of scientists say they were unable to replicate the results of a 2010 study claiming to have found 'alien life' on Earth--a bacterium that could build its DNA using arsenic. Science journalist Carl Zimmer talks about how the controversy played out online, and how science corrects itself.
Reporting in the Bulletin of the American Meteorological Society, researchers write that extreme heat waves, such as the one last year in Texas, are 20 times more likely today than they were in the 1960s. NOAA climatologist Tom Peterson discusses what future climate change may bring.
California lawmakers gave the green light to the first phase of construction of high-speed rail in the state. Does this mean that America is on track for faster, sleeker trains? What potential speed bumps still lie ahead? Railroad engineer Christopher Barkan discusses the costs, benefits and state of the technology.
What makes some types of cancer resistant to drugs? Reporting in Nature, researchers write that cancer cells may be dodging treatment with help from seemingly innocent bystanders. Cancer researcher Todd Golub discusses how a tumor's microenvironment may affect its behavior.