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From government programs to public-private partnerships, the sun is rising on energy efficiency in rural America.

The Elk River disaster is a tragic reminder of the risks that spring from our dependence on fossil fuels.

Any meaningful discussion of future energy sources must include water, or the rapidly increasing lack thereof.

The mighty Colorado is not simply infrastructure for water delivery. It is the lifeline of the American West.

After only one year, a strong, healthy, and enduring carbon market has emerged in the Golden State.

Climate deniers are exploiting the current polar vortex as “proof” that global warming isn’t reality. Brain freeze? There's actually an interesting connection between opinion polls, our own personal experiences, and belief in climate change.

A friend reflects on the profound and far-reaching consequences of Chico's life and death.

When deciding how we’ll meet our food needs, we cannot pit agricultural productivity and environmental resilience against each other.

Growing evidence connects exposures to certain common chemicals to obesity.

The Endangered Species Act has remained so durable for so long, and proven so successful in so many ways, because it is, at root, so profoundly and so fundamentally conservative.

Passionate public arguments can bring clarity and strengthen resolve, especially when the controversies are triggered by positions you firmly believe in.

China faces serious environmental challenges, but the scale of the solutions is incredible.

You absolutely can make a difference. Here's proof.

Some of America’s oldest cities, like Philadelphia, are embracing sustainability and reaping the environmental and economic benefits.

As some nuclear power plants are reaching the end of their design life, a case study from California shows how the nation might proceed. Learn about SONGS’ ghost and our past, present and future.

The recent warming trend is actually two and half times greater than we thought.

When you ask how nature can help meet the need we as a society are trying to meet, surprisingly positive things can happen.

We’ll have the technical capability by mid-century to rely on renewables for 80 percent of our electricity. An antiquated grid and equally antiquated policies stand in the way.

Innovative maps prove indigenous management of tropical forests make environmental and economic sense.

A beekeeping couple learns to adapt, in the same way that many farmers adopt new practices that are good for the environment and the bottom line.

During the holidays (and year round), the ubiquity of toxic chemicals is not a problem we can solve on our own.

BPA is everywhere: In the news, in social media, and likely in you! Join us for a Google Hangout on Tuesday, December 17 to discuss.

A new study suggests that some forms of geoengineering could imperil the world's food and water supplies.

Nat Keohane on the Foreign Policy Association’s “Great Decisions” podcast.

Today the President directed the Federal Government to consume 20 percent of its electricity from renewable sources by 2020, more than double the current level.