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At 2:46 pm local time March 11, an 8.9-magnitude earthquake struck Sendai, a port city of one million residents in northeastern Japan. It was the largest earthquake recorded in Japan in the last century.

On March 11, a powerful, 8.9-magnitude quake hit northeast Japan, triggering a tsunami with 10-meter-high waves that reached the U.S. West Coast.

Residents offering free and paid space have become a viable alternative for the packed conference.

The 8.9 magnitude earthquake in Japan is causing problems for at least one of its fleet of nuclear reactors--and authorities have shut down 10 of the country's 55 units.

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Editor's note (3/11/11): This article is from the forthcoming April issue of S cientific Aemrican . We are posting the text of the article early in light of the deadly Japan earthquake and resulting tsunami

Our partners at Nature have a correspondent in Japan.

This post is a slightly edited version of my December 29, 2004, post written in reaction to media reports about a "sixth sense" in animals, that supposedly allows them to avoid a tsunami by climbing to higher ground.

Will seismologists ever be able to reliably predict the exact location, time and magnitude of earthquakes like the one that just devastated Japan and sent tsunamis racing across the Pacific Ocean? If so, they might be able to save many lives.

Like many Americans, I have recently been diagnosed with a vitamin D deficiency. In addition to drinking milk, eating dark leafy greens, and taking 2000 IU’s of D a day, I’ve also been trying to get as much sunlight as possible. When I came across this article in the November 7, 1903 Scientific American , I realized that a possible reason for my deficiency is my home’s inability to rotate

Elephants are smart, social animals. And now we know that they can organize themselves into teams to accomplish tasks. A research team that included renowned primatologist Franz de Waal taught 12 Thai elephants--who already work with human trainers called mahouts--to get a bowl of food by pulling a rope attached to an out-of-reach table

Each day, Inc.'s reporters scour the Web for the most important and interesting news to entrepreneurs. Here's what we found today. The tech response to Japan's earthquake.

Dear EarthTalk : What specific issues and protections are covered by the Food Safety Modernization Act recently signed into law? --P.

Climate change will pose major new hurdles for U.S. naval forces, forcing the military to grapple with an emerging Arctic frontier, increasing demand for humanitarian aid and creating rising seas that could threaten low-lying bases, the National Academy of Sciences said yesterday. "Even the most moderate current trends in climate, if continued, will present new national security challenges for the the U.S.