drones

How daredevil drones find nearly extinct plants hidden in cliffs

How daredevil drones find nearly extinct plants hidden in cliffs

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Dec 10 (Reuters) – Ben Nyberg stood on a sharp ridge along Hawaii’s Na Pali coast, his eyes scanning the leafy nooks of nearby red rock ridges. It was quiet, save for the faint hum of a drone flying among flocks of curious white-tailed tropicbirds. Nyberg aimed the drone closer to the opposite ridge, scanning …

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How satellites, radars and drones track meteorites and help defend Earth's asteroids

How satellites, radars and drones track meteorites and help defend Earth’s asteroids

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On July 31, 2013, a constellation of US defense satellites saw a streak of light over South Australia as a boulder from outer space streaked through Earth’s atmosphere before crashing into the ground . The impact created an explosion equivalent to approximately 220 tonnes of TNT. More than 1,500km away in Tasmania, the bang was …

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