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Green cooling tech is based on the idea of salt melting ice

By combining a salt and a solvent—both cheap and abundant—engineers developed a new refrigeration system that uses less energy and emits no greenhouse gases.

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After natural disasters, workers rebuild — and face exploitation
www.hcn.org

After natural disasters, workers rebuild — and face exploitation

Immigrant workers and day laborers are especially vulnerable to health risks and wage theft.
In California, cars and cows hang heavy in the air

In California, cars and cows hang heavy in the air

Fated by geography, the San Joaquin Valley’s surfeit of cows, cars, crops, and oil produce air pollution that weighs heavily on public health.

Puerto Ricans pump drinking water from hazardous-waste: report.

Some Puerto Rico residents are turning to a hazardous waste site for drinking water as the island continues to reel from Hurricane Maria.

Puerto Ricans pump drinking water from hazardous-waste: report

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Fast flood insurance ‘fix’ may elude a broke – and broken – program.

Flood insurance, too risky for most insurers to touch, only exists because it is backed by a federal program that has been bleeding, and now is hemorrhaging, cash.

By Joseph A. Davis

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Thirty years after Montreal pact, solving the ozone problem remains elusive.

Did the Montreal Protocol fix the ozone hole? It seemed so. With chlorofluorocarbons (CFCs) and other ozone-eating chemicals banned, many scientists said it was only a matter of time before the ozone layer recharged, and the annual hole over Antarctica healed for good.

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Could papayas help Hawaii become energy independent?

A plant pathologist and her team of researchers have been gathering leftover papayas from local packing houses and turning them into a fuel that’s used to produce biodiesel.

BY SARA NOVAK | SEP 12 2017

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