Half a billion birds fly over Israel during the autumn migration.
A leading Israeli ornithologist tells the Today programme that Israel is at the junction of three continents: from the political point of view, it's a disaster (the airspace is crowded enough); from the ornithological point of view, it's heaven.
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Swarm of nanorobots can remove tiny plastic fragments from water
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In just 2 hours, small metal robots can capture most nanoscopic plastic
particles from a sample of water
5 hours ago