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Amazon says FAA drone approval already obsolete

The approval federal aviation officials gave Amazon.com last week to test a specific drone design outdoors is already outdated, the company's top policy executive said Tuesday in written testimony to a Senate subcommittee.

2 hours ago
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More evidence for groundwater on Mars

Monica Pondrelli and colleagues investigated the Equatorial Layered Deposits (ELDs) of Arabia Terra in Firsoff crater area, Mars, to understand their formation and potential habitability. On the plateau, ...

3 hours ago
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China starts relocating endangered porpoises: Xinhua

Chinese authorities on Friday began relocating the country's rare finless porpoise population in a bid to revive a species threatened by pollution, overfishing and heavy traffic in their Yangtze River habitat, ...

4 hours ago
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Is the universe finite or infinite?

Two possiblities exist: either the Universe is finite and has a size, or it's infinite and goes on forever. Both possibilities have mind-bending implications.

6 hours ago
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X-rays probe LHC for cause of short circuit

The LHC has now transitioned from powering tests to the machine checkout phase. This phase involves the full-scale tests of all systems in preparation for beam. Early last Saturday morning, during the ramp-down, ...

6 hours ago
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