AC VS. DC
Running solar panels, batteries and heat pumps on DC power—not the AC current from the wall—could cut energy use and[…]
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Month: July 2026
GOOD NEWS FOR COFFEE LOVERS
An energy-efficient espresso is made without heat and 75% less energy. Ultrasonic sound waves are applied to turn room temperature[…]
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GRAPPLING WITH GEOENGINEERING
Using geoengineering to cool the planet might create problems. Cloud seeding over the eastern Pacific and introducing aerosols into the[…]
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SPECIAL USE OF SUNLIGHT
A new sunlight-powered solid-state material converts visible light into higher-energy UV light, enabling cleaner air purification, solar-driven chemistry, and advanced[…]
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JUST SOME OF THE PROBLEMS CAUSED BY CLIMATE CHANGE
Extreme heat widens blood vessels, flushes fluid out of the bloodstream, forcing the heart to pump too much blood per[…]
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