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Photograph by Joe Petersburger, National Geographic How Do Giant Pandas Survive on Bamboo?Panda poop held clues to how bears break down plant fibers, study says. A new analysis of panda poop has finally answered an age-old question: How do giant pandas survive on a diet that's 99 percent bamboo when they have the guts of carnivores? Plant-eating animals tend to have longer intestines to aid in dig
It may be doomed, but the NASA satellite that's about to crash-land on Earth isn't going out quietly. (Also see "Space Debris: Five Unexpected Objects That Fell to Earth.") To scientists' surprise, the six-ton Upper Atmosphere Research Satellite, or UARS, has picked up speed and is now expected to plummet through the atmosphere Friday. Only two weeks ago government scientists projected that the sa
This Month in Photo of the Day: Travel and Adventure Photos Tinted orange by the morning sun, a soaring dune is the backdrop for the hulks of camel thorn trees in Namib-Naukluft Park. See more pictures from the June 2011 feature story "Africa's Super Park." See more pictures of Namibia » See more pictures of trees »
A skunk's stripes aren't just for style: They may direct predators' eyes straight to the source of the animal's smelly anal spray. A new analysis of data on and pictures of nearly 200 carnivorous mammals—including skunks, badgers, and wolverines—shows that fierce fighters tend to be more boldly colored than more peaceable animals, which tend to use camouflage to stay safe. And those colorations de
Nuclear radiation from bomb tests and power plant accidents causes slightly more boys than girls to be born, a new study suggests. While effects were seen to be regional for incidents on the ground, like Chernobyl, atmospheric blasts were found to affect birth rates on a global scale. The result: Millions fewer females have been born worldwide than would otherwise be expected, researchers estimate
Fossils of a meter-long (3.3-foot) prehistoric ocean predator have been found in southeastern Morocco. The specimens include the largest yet of its kind and suggests the spiny, somewhat shrimplike beasts dominated pre-dinosaur seas for millions of years longer than thought. Early offshoots of an evolutionary line that led to modern crustaceans, the so-called anomalocaridids looked sort of like mod
Hawaii's traditional birth story—that the volcanic islands were, and are, fueled by a hot-rock plume running directly to Earth's scorching core—could be toast, a new study hints. (See pictures of a recent eruption Hawaii's Kilauea volcano.) Scientists say they've found solid evidence of a giant mass of hot rock under the seafloor in the region. But it's not a plume running straight from the core t
ON TV: Area 51 Declassified premieres on the National Geographic Channel on Saturday, May 28, at 10:00 p.m. ET/PT. No word yet on alien starships, but now that many Cold War-era Area 51 documents have been declassified, veterans of the secret U.S. base are revealing some of the clever—and surprisingly low-tech—ways they hid futuristic prototypes from prying eyes. (Also see "Exclusive Area 51 Pictu
Best Pro "Arts and Cultures" PictureAn open-air movie enthralls remote villagers in India's Maharashtra state in this year's winning picture from the "Arts and Culture" category of the World Photography Awards Professional Competition, which were announced in London late last month.According to Indian photographer Amit Madheshiya, travelling cinemas visit villages far from movie theaters once a ye
Even at ancient Maya cities far from volcanoes, ash rained down relatively frequently, a "spectacularly important" new study says. The finding could explain how these ancient metropolises survived—and even prospered—despite having poor soil. Extending south from southern Mexico, through Guatemala, and into northern Belize, the Maya Empire prospered from about A.D. 250 to 900, when it crumbled. (Se
ON TV: Explorer: Mystery of the Murdered Saints airs at 10 p.m. ET/PT on Tuesday, April 19, 2011 on the National Geographic Channel. The skeletons of two married, early-Christian saints—said to have been buried alive nearly 2,000 years ago—may have been identified in Italy, scientists announced Thursday. Analysis of the skeletons—sealed off for centuries in an Italian cathedral until recently—seem
In the shadow of Mount Ararat, the beloved and sorrowful national symbol of Armenia, stands a 31-year-old nuclear plant that is no less an emblem of the country's resolve and its woe. The Metsamor power station is one of a mere handful of remaining nuclear reactors of its kind that were built without primary containment structures. All five of these first-generation water-moderated Soviet units ar
New "Buck-Toothed Evil Spirit" Dinosaur FoundPrimitive predator bridges gap in fossil record, experts say. A newly discovered dinosaur species bridges the gap between the earliest known group of predators and more advanced beasts such as Tyrannosaurus rex, according to a new study. Found at New Mexico's Ghost Ranch fossil site, the primitive dinosaur lived about 205 million years ago. (Related pic
This story is part of a special series that explores energy issues. For more, visit The Great Energy Challenge. For a world that was on the brink of a major expansion in nuclear power, a key question raised by the Fukushima Daiichi crisis is this: Would brand-new reactors have fared better in the power outage that triggered dangerous overheating at one of Japan's oldest power plants? The answer se
A Search for AnswersThis story is part of a special series that explores energy issues. For more, visit The Great Energy Challenge. Their faces obscured by breathing masks, workers pore over data in the control room for the now-ruined Unit 1 and Unit 2 reactors at Japan's Fukushima Daiichi nuclear power plant on Wednesday. Although some power has now been restored to the facility, the workers know
1. The Calm Before the TsunamiIn the first of a series of newly released pictures showing a Japanese shoreline before and during the recent tsunami, a beach in Fukushima Prefecture appears calm.The tsunami, captured here by a researcher working on the coast, struck northeastern Japan after a magnitude 9 earthquake, nearly wiping away entire towns.A tsunami isn't a tidal wave but a series of waves—
The Empire State Building, the Eiffel Tower, Beijing's Forbidden City, and hundreds of other world landmarks will be abruptly blacked out Saturday night. But the 60-minute power outages—scheduled for 8:30 to 9:30 p.m., local time—won't be the results of a terrorist plot, natural disaster, or massive solar flare. They're all part of Earth Hour 2011. (See before-and-after Earth Hour pictures from pa
This story is part of a special series that explores energy issues. For more, visit The Great Energy Challenge. For decades, Three Mile Island and Chernobyl have served as shorthand for the nightmare of nuclear power generation gone awry. In the wake of Japan's deadly earthquake and tsunami last week, the still-unfolding disaster of Fukushima Daiichi has come closer than any nuclear crisis in hist
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