The US biofuel mandate helps farmers, but does little for energy security and harms the environment

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If you've pumped gas at a U.S. service station over the past decade, you've put biofuel in your tank. Thanks to the federal Renewable Fuel Standard, or RFS, almost all gasoline sold nationwide is required to contain 10% ethanol - a fuel made from plant sources, mainly corn.

The average person’s daily choices can still make a big difference in fighting climate change – and getting governments and utilities to tackle it, too

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The average American's everyday interactions with energy sources are limited. They range from turning appliances on or off, to commuting, to paying utility bills.

The connections between those acts and rising global temperatures may seem distant.

A new ratings industry is emerging to help homebuyers assess climate risks

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As climate change fuels large-scale natural disasters, the real estate mantra of "location, location, location" is taking on new meaning. In 2021, homeowners have contended with threats including paralyzing cold on the Great Plains, wildfire evacuations in the West and flooding from the South to New York City and New England.

EarthTalk – What are conservation dogs?

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Dear EarthTalk:

What are conservation dogs?

Jon Gretcham, Portland, OR

Simply put, conservation dogs are canines specially trained in sniffing out evidence of specific wildlife species that scientists are seeking to learn more about for one reason or another. Most commonly these dogs are used to help biologists understand where and how threatened or endangered wildlife species are hanging on--or if they are still around at all.