New questions are being raised about the reliability of U.S. financial markets after all trading in Nasdaq stocks was shut down for three hours on Thursday. Nasdaq blamed the problem on its system for quoting prices. The trading halt immediately led to calls for markets to make their software systems more robust and compatible.
Kesennuma, in the Tohoku region of Japan, was devastated in a March 11, 2011, earthquake and tsunami. A researcher studying recent mega-quakes says this one, centered some 300 miles from Tokyo, could actually mean an increased risk of a quake hitting Japan's capital, one of the most populous metropolitan areas in the world.
There's a joke among scientists: Prediction is difficult, especially about the future. For Ross Stein, it wasn't a joke after the Indian Ocean quake and tsunami in 2004. It killed some 275,000 people. "I just felt almost a sense of shame," Stein says, "that this tragedy could have been so immense in a world where we have so much intense research effort."
Judith Curry with her dogs, Rosie (left) and Bruno, in the mountains near Lake Tahoe. The climatologist focuses on the uncertainties of climate change far more than on the consensus of climate scientists.
Credit Richard Harris / NPR
Climate scientist Judith Curry believes that if climate scientists more readily would acknowledge the inherent uncertainties of the issue, skeptics would more likely accept the established central tenets of global warming.
While the Obama administration presses forward with plans to deal with climate change, Congress remains steadfast against taking action. It's not easy to find a scientist who will agree with that point of view. But Republicans have found an ally in a climate scientist by the name of Judith Curry.
"If you could imagine a grandfather clock and see the pendulum swinging back and forth, ideally that pendulum would swing back and forth very uniformly," Ludlow says. "Each swing would take exactly the same amount of time."
That's stability. But what if something perturbs the system, like a mischievous toddler?
<strong>Prehistoric Deer Stew?</strong> A fragment of pottery found in Neustadt, Germany, is coated in the microscopic remains of crushed mustard seeds and roasted fish and ruminant meat, possibly deer. This shard dates back to about 5,900 years ago.
Originally published on Thu August 22, 2013 1:03 pm
Remember those frog transparencies from biology class? The ones in the textbook where you could lay the circulatory system on top of the digestive system on top of the skeleton system? Here's that same idea, updated and gently presented for kids, from a company called Tinybop. This time, the layers are cut from colored paper, exquisitely designed by Kelli Anderson. And this time (unlike that sadly frozen frog) it moves! Watch it eat a pizza slice ...
Of all the creatures in the sea, one of the most majestic and mysterious is the whale shark. It's the biggest shark there is, 30 feet or more in length and weighing in at around 10 tons.
Among the mysteries is where this mighty fish migrates and where it gives birth. Now scientists have completed the biggest study ever of whale sharks, and they think they have some answers to those questions.
President Obama is seen on a video camera as he delivers a speech in Youngstown, Ohio, in 2010. In addition to footage of official events, the White House now has thousands of hours of behind-the-scenes video that it will archive.
Credit Jeff Swensen / Getty Images
White House videographer Arun Chaudhary stands in front of Air Force One in 2010.
Sometimes you have to give up a little privacy in order to find out how much — or how little — privacy you really have. So I handed over the keys to my Gmail account to Cesar Hidalgo, a professor at the MIT Media Lab and the designer of a program called Immersion.