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The first plane to fly day and night on solar power took off Friday from Moffett Field in California, headed across the U.S. Two pilots will take turns flying 20-hour stretches apiece on the 5-leg trip, ending at New York's JFK Airport in early July. The Solar Impulse HB-SIA aircraft has the wingspan of a jumbo jet but the weight of a car, and will travel about 40 miles an hour.
This story misstated the day the SIA made its announcement. It is Wednesday.
The Solar Impluse HB-SIA is designed to fly day and night without fuel. A prototype is scheduled for a test flight before the end of the year.
An MIT team has developed a paper stick that could someday be used as an inexpensive and accurate way to detect a range of cancers. It holds particular promise for the developing world.
The Solar Impulse starts the fourth leg of its flight across America, but it will have to make a pit stop in Cincinnati to avoid bad weather before landing in Washington, D.C.
The solar-powered airplane departs California on a tour that will take it across the nation ahead of a globe-circling journey in 2015.
Want to see what your fellow countrymen and women were streaming in 2012? Spotify spills the beans on the music listening habits of Aussies.
Global sales of semiconductors rise nearly 32 percent in 2010, reaching a record level of $298.3 billion, according to new stats from the Semiconductor Industry Association.