Most refrigeration relies on a potent group of greenhouse gasses called HFCs. But John Mandyck of United Technologies tells host Steve Curwood that his company has developed a new technology that can cool shipping containers using C02 directly from the atmosphere.

Blocked for years by the White House Office of Management and Budget, two chemical safety rules have been dropped altogether by the EPA. Environmental Defense Fund’s Richard Denison tells host Steve Curwood why this is bad news for public health.

Many varieties of hummingbirds gather to feed in Arizona's Madera Canyon. Writer Mark Seth Lender found they tolerated his presence - but were intolerant of other hummingbirds.

Farmers struggling to make a living from their land have welcomed gas companies that want to drill for natural gas on their property. Yet all too often royalty payments don't measure up to the promises. Reporter Abrahm Lustgarten of ProPublica tells host Steve Curwood about his investigation.

The United States imports over a billion pounds of shrimp annually. Most of it arrives frozen from environmentally destructive tropical farms. Now U.S. shrimp farmers are using environmentally friendly techniques to produce a fresh, delicious product with a much gentler environmental footprint. Living on Earth’s Naomi Arenberg reports.

Sy Montgomery spends her life exploring the world of animals and writing about her adventures. She tells host Steve Curwood about her latest book, chronicling an expedition with a scientist trying to save South America's largest mammal, the endangered tapir.