The Larsen B ice shelf, a large floating ice mass on the eastern side of the Antarctic Peninsula, shattered and separated from the continent 10 years ago. A NASA satellite captured the event in this image from Feb. 23, 2002. The 650 foot-thick, 1,250-square-mile ice shelf had existed since the last ice age.
Ten years ago, a piece of ice the size of Rhode Island disintegrated and melted in the waters off Antarctica. Two other massive ice shelves along the Antarctic Peninsula had suffered similar fates a few years before. The events became poster children for the effects of global warming. But a new study finds that the story isn't quite so simple.
There's no question that unusually warm air triggered the final demise of these huge chunks of ice. But a lingering question is whether these events can be attributed to human-induced global warming.
This is TALK OF THE NATION. I'm Neal Conan in Washington. Parts of the country have suffered from record heat and drought for several years in a row now, and this summer, it's been just brutal. In past programs, we talked with farmers about their crops. Today, we focus on difficult choices facing ranchers and dairy farmers.
Originally published on Thu August 23, 2012 2:34 pm
Childhood obesity is on the rise in many countries and overuse of antibiotics is now on the radar as a possible factor in the epidemic. Here 18-month-old twins are weighed in a nutritionist's office in Colombia.
Credit Raul Arboleda / AFP/Getty Images
There's growing evidence that the bacteria in our gut influence our health, including how much we weigh. So what happens when antibiotics knock out some of the microbes that help us?
A study, published online today in the journal Nature, finds that antibiotics make young mice fatter by changing the mix of their gut bacteria.
A tenuous thread of dark matter is seen connecting the galaxy clusters Abell 222 and 223.
Credit Courtesy Jörg Dietrich/Universitäts-Sternwarte München
When astronomers survey the universe, the landmarks are galaxies, those gigantic agglomerates of stars and interstellar gas spread across the immensity of space. A typical spiral galaxy, like our own Milky Way, boasts hundreds of billions of stars grouped along hundreds of thousands of light-years. That means that it takes a beam of light all that time to go from one extreme of the galaxy to the other, traveling, as light does in a vacuum, at 186,282 miles per second.
Originally published on Mon October 15, 2012 11:02 am
One of Bassem Samaan's Pan e Vino fig trees, propagated from the yard of an Italian restaurant in Bethlehem, Pa.
Credit courtesy Bassem Samaan
In the backyard of an unassuming suburban home in Bethlehem, Pa., is a global cornucopia of botanical heritage. Almost 300 varieties of fig grow here, most of them with roots in Europe, Asia or Africa, and each one collected and propagated by Bassem Samaan, a 34-year-old Lebanese native with an unusually green thumb and an obsession with figs.
Samaan is one of a handful of eccentric gardeners around the world whose goal is to save and preserve rare or unusual fruit varieties — trees that may never have commercial value and which may barely cling to existence.
A federal court has rejected a rule that would have regulated air pollution that blows from one state to the next. The ruling puts a damper on the Obama administration's efforts to reduce asthma, heart disease and other ailments related to air pollution. States and utilities asserted that the rules overstepped the EPA's authority under the Clean Air Act.
Independent voters have grown in recent years into a mega voting bloc. By some estimates they outnumber registered Republicans, and even registered Democrats.
Every election cycle, independents generate enormous amounts of interest as candidates, pollsters and the media probe their feelings. These voters are widely considered to hold the key to most elections.
From NPR News, this is ALL THINGS CONSIDERED. I'm Audie Cornish.
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And I'm Melissa Block.
Time now for a story on the latest recall. It's not food or an appliance. It's gasoline. BP has recalled gasoline that was stored at a facility in northwest Indiana, near Chicago. But tens of thousands of gallons of that gas have already been sold and pumped into gas tanks.
As NPR's Jeff Brady reports, local mechanics are fielding lots of calls from concerned drivers.
Cities may be the defining element of human civilization.
The path from hunter-gatherers in the Paleolithic era 25,000 years ago to the high-tech, high-wonder jumble we inhabit today runs straight through cities. In traveling that path, our construction of cities has always been a dance with physics. In some cases, that physics was explicitly understood; in others, its manifestation was only recognized in hindsight.
As our cities have become more complex the physics embodying their behavior and organization has also become more nuanced, subtle and profound.