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AZUZ: The U.S. director of national intelligence says because of its growing missile and nuclear capabilities, the Asian country of North Korea is increasingly becoming a grave national security threat to the U.S. America has a few ways it could resp

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He's test firing, recalibrating and threatening to attack. As Kim Jong-un races to perfect its ballistic missile capability, there are serious questions whether the US can defend against that threat. The anti-missile system that would shoot down Nort

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Is anyone out there? For over 40 years scientists have been searching for extraterrestrial intelligence, but theyve found nothing. Now the new Allen Telescope Array, a string of 350 radio telescopes, is being built 300 miles north of San Francisco a

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And clearly, we are trying to find evidence of ET, and we are trying to do that by looking for a signal, in whats called the electromagnetic spectrum, which is a fancy way of saying the radio dial, at least for us. Let me turn on my radio here, okay,

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BEIJING, March 13 (Xinhua) -- Both China and U.S. signaled that the world's two biggest economies should explore a road of new-type relations. The new type of relations between major powers should be based on mutual respect, cooperation and seeking w

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BEIJING, Sept. 26 (Xinhuanet) -- Weather forecasts showed that Thursday or Friday might be suitable for launching the Tiangong-1 spacecraft, experts said. The unmanned spacecraft, part of China's first spacecraft rendezvous and docking mission, was s

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今天我们要学的词是signal。 Signal, 作为动词，意思是显示。 The number of Americans filing for unemployment benefits for the first time fell to the lowest level in nearly six months, signaling a slight improvement in the job market

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Deciding where to place a Wi-Fi router at home to minimise signal blackspots is a fine art. But a physicist has attempted to tackle the problem by mathematically working out the optimum position for a router. He studied how walls and reflections affe

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WASHINGTON, July 5 (Xinhua) -- The U.S. Department of Defense on Friday announced that the nation's missile defense system failed in a latest test with a ground-based interceptor missile failing to hit an incoming ballistic missile over the Pacific.

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What do the names Whirlpool, Black Eye, and Sombrero all have in common? Are they all appliance brands, names of galaxies, special ops forces, or oceanic reefs? These are all the names of galaxies, massive concentration of stars. AZUZ: Of course, the