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Corals are well-known for the brilliant colors they sport, but less well-known is the light, or fluorescence, that most coral species give off. Monitoring the levels of this fluorescence could be an easier way for scientists to monitor the health of coral reefs around the world, a new study finds, as these reefs are subjected [...]

China and the United States should avoid “groundless accusations” against each other about cyber security and hacking into each other’s computer systems, newly installed Premier Li Keqiang said on Sunday. Li’s comments, at the close of China’s annual meeting of parliament and a day after he assumed the premiership, come amid a war of words [...]

Literatura alemana con acento

Los nuevos autores inmigrantes que escriben en alemán crean nuevos términos y formas de expresión, renovando y enriqueciendo el género literario en lengua alemana. Se los puede encontrar en la Feria del Libro de Leipzig.

NASA’s Cassini spacecraft has snapped its last up-close photos of Saturn’s icy moon Rhea, revealing a battered satellite covered in craters from violent impacts. “Take a good, long, luxurious look at these sights from another world, as they will be the last close-ups you’ll ever see of this particular moon,” Cassini imaging team lead Carolyn [...]

A Soyuz spacecraft has undocked from the International Space Station and is preparing to descend into Earth’s atmosphere to return an American astronaut and two Russian cosmonauts back home after nearly five months living in orbit. The U.S.-Russian Soyuz crew is scheduled to land tonight at 11:05 p.m. EDT.

A Soyuz spacecraft brought an American astronaut and two Russian cosmonauts back to Earth after nearly five months of duty aboard the International Space Station.

How a Martian mountain would look on Earth

Science editor Alan Boyle’s blog: If you could pull up a 3-mile-high mountain from Mars and plop it down in California’s Mojave Desert, it’d probably look much like the latest color panorama from the Curiosity rover’s science team.

Capcom and Valve announced that characters and zombies from each game will start appearing in each other’s games. NBCNews.com’s Todd Kenreck reports. (In-Game)

The young man tucks his violin under his chin and begins to play. A hush falls over the few spectators in the largely empty opera house, who turn toward the bare stage. As his lilting notes float through the room, other people trickle in from the lobby to listen.

An Illinois man was charged with threatening to kill President Barack Obama after putting his message on a contact-the-White-House online form. Normally, the man’s comments, including — “I am going to kill Obama and no one I repeat no one is going to stop me” — is not the kind of comment the White House [...]

Crowdfunding to restore classic telescope

A historic telescope could be on its way to an upgrade. The Lowell Observatory in Flagstaff, Ariz., has launched a two-month-long “crowdfunding” campaign to help raise money to restore its vintage Clark Telescope.

Treasury Secretary Jack Lew will press China to take “serious steps” to stop cyber attacks directed at the United States and urge the administration of new Chinese President Xi Jinping to accelerate economic reforms, a U.S. official said on Friday.

Bad weather delays shuttle crew’s return

An American astronaut and two Russian cosmonauts are stuck in space for one more day after freezing rain and fog on Earth prevented them from landing in Central Asia on Thursday, NASA officials say.

Un apasionante viaje por la literatura

La Feria del Libro de Leipzig es un lugar para el descubrimiento. Con la presentación de más de 10.000 títulos, en Leipzig se dan a conocer nuevos autores y tendencias del libro tradicional y del digital.

Archaeologists said on Friday they had discovered a lost burial ground during excavations for a massive new rail project in London which might hold the bodies of some 50,000 people who were killed by the “Black Death” plague more than 650 years ago.

Desde siempre quiso ser director de orquesta y a sus 35 años ha llegado muy lejos. Acaba de ser nombrado titular de la Orquesta de la Radio de Fráncfort y de la Sinfónica de Houston. Sus sueños se van haciendo realidad.