Our fancy dinner oysters can tell us a lot about how our oceans are changing.

Find out why some baby oysters can't form strong shells.

Oysters. We love 'em.

You can imagine why people love oysters so much: They're a low-fat, high-protein food with a fresh, briny flavor — nature's perfect bar snack.

New York Times food writer Mark Bittman is a fan, too. When he moved from the Big Apple to San Francisco in January, trips to a raw bar at a local market became part of his weekend routine.

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The Wilderness Society

According to popular belief, right whales got their name because they were considered the "right" whales to hunt.

They were preferable for hunters because they swim near shore and float when killed. That sort of mindset drove their numbers so low that southern right whales are still recovering, even though we banned whaling of the species in 1937.

About 12,000 remain of one species, the southern right whale, according to one estimate.

You might imagine this would sound an alarm to keep them protected. Unfortunately, a new danger is at hand.

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The Wilderness Society

A list of top coal mines gives some perspective about how things are going for fossil fuel.

"No Coal Companies Went Bankrupt Last Week" is a real headline these days.

The time of coal has passed. Clean energy is our future.

Child labor in a Pennsylvania coal mine feels pretty archaic, no? Image via Wikimedia Commons.

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League of Conservation Voters

In the far northeast corner of Alaska, with no roads going in or out, lay nearly 20 million acres of wildlife refuge.

It's the Arctic National Wildlife Refuge, the largest national wildlife refuge in the country.

Its goals are very specific: to conserve animals and plants in their natural diversity, to ensure a place for hunting and gathering activities, to protect water quality and quantity, and to fulfill international wildlife treaty obligations.

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Sierra Club