Billy Bragg has a new song about cities teeming with people, highways jammed with cars, and the nightmare of airports. The place to go, the song says, is the local beach:
'Just turn around
And come on down
The beach is free.'
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
1 hour ago
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