As public buildings - including theatres and museums - get lousy ratings for their CO2 emissions, it's timely to learn that in 'passive houses' outside Frankfurt the families use only 5% of the energy their parents' homes used and the new homes cost only 5% -7% more to build.
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
2 hours ago
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