High-altitude wind machines could power NYC

The wind blowing through the streets of Manhattan couldn’t power the city, but wind machines placed thousands of feet above the city theoretically could. The first rigorous, worldwide study of high-altitude wind power estimates that there is enough wind energy at altitudes of about 1,600 to 40,000 feet to meet global electricity demand a hundred times over.

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U.S. calls for cease-fire in Sri Lanka

The State Department Thursday called for a cease-fire between the Sri Lankan government and Tamil Tigers to allow civilians to escape the fighting, after a two day humanitarian pause ended with renewed violence. “We call upon the government and military of Sri Lanka, and the Tamil Tigers to immediately stop hostilities until the more than 140,000 civilians in the conflict area are safely out,” Acting Spokesman Robert Wood said in a statement. “Both sides must immediately return to a humanitarian pause and both must respect the right of free movement of those civilian men, women and children trapped by the fighting.” Wood urged the government to halt shelling of the safe zone and allow international monitors into ensure the safe exit of the civilians

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U.N. official: Sri Lanka ceasefire ‘inadequate’

The United Nations humanitarian chief Wednesday criticized a two-day pause in the fighting between the Sri Lankan army and Tamil Tiger rebels as "inadequate." John Holmes, the under secretary general for humanitarian affairs and emergency relief coordinator, told reporters that the 48-hour break in hostilities was not sufficient, even as fighting resumed in the northeast of the country. The brief cessation of hostilities was announced by the Sri Lankan government on April 12 and allowed the U.N.

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Russian, U.S. satellites collide in space

Two satellites, one Russian and one American, have collided some 800 kilometers (500 miles) above Siberia, the Russian and U.S. space agencies, said Thursday. The collision on Tuesday produced two large debris clouds, NASA said

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