International aviation is on course for a rough landing in our warming world. Air travel is growing rapidly -- and so are aviation emissions, which are already responsible for 5 percent of the warming effect of global greenhouse gas emissions.

The passing of another Earth Day seems to have some pundits waxing nostalgic. One such pundit, Nicholas Lemann of the New Yorker, wrote a glowing piec...

Gina McCarthy has been tapped to lead the Environmental Protection Agency, and given her track record of protecting America's families from toxic pollution, her confirmation will help us all breathe easier.

We know what's happening, and we know why. But when talk finally turns to solutions, we always hear the same refrain: We can't afford to do anything about climate change.

In the weeks and months to come, we at Ocean Conservancy will dive deeper to take a very hard look at carbon pollution. For instance, what impact might the Keystone XL pipeline, if approved, have on the ocean?

The U.S. Senate cast key votes on the fiscal 2014 budget resolution Friday that sent a clear message on climate change: we won't stand in the way of executive action to cut the carbon pollution from our nation's power plants.

Saving energy saves consumers money. Less pollution means better public health and cleaner lakes and rivers for all. Why would anyone argue that it's somehow smart to waste energy and money?

Climate change is already threatening our communities with extreme weather and costly damages. Fortunately President Obama has the power to stop a major source of global warming pollution from spreading: tar sands oil.

President Obama underscored his commitment to fighting climate change in both his Inaugural Address and his State of the Union Address. Now he has two critical opportunities to turn those words into deeds.

The president recognizes that the power to make change doesn't reside only in Washington; it sits within all of us. We can raise our voices, influence our friends, get our lawmakers' attention, and create our own groundswell.

WASHINGTON (AP) — Heat-trapping gases from U.S. power plants fell 4.6 percent in 2011 from the previous year as plants burned less coal, the biggest...

In his inaugural address pledge to respond to the threat of devastating climate change, the president said that America must lead the transition toward sustainable energy sources. Promising news for our children, but what are the specifics?

The time for this national carbon conversation is overdue. We are already paying the price of carbon pollution, and now we need to ensure polluters pay the price if we are to address this challenge.

In his inaugural address this week, President Obama committed us to get back to work on the challenge of a sustainable energy future. But will this reignite the debate on climate change or have three widely publicized stories already done that for us?

As we enter 2013, President Barack Obama faces a major challenge on how to address climate disruption. The nation -- and the world -- are looking to him for bold action and to see whether America will finally take the steps needed to address one of the biggest crises our planet has ever faced.

A collection of papers out in PNAS looks at the response to the Deepwater Horizon Oil Spill, examining whether it was successful and how it could be improved. The release of the reports comes just days after the EPA suspended BP from obtaining new U.S. contracts.

For survival of the planet and our way of life as human beings, we need to drastically reduce our carbon output. The approach being taken does not do that.

America is known for facing challenges head on and solving them with action, resourcefulness and innovation. We must do the same with the climate crisis.

The only win-win solution is for the US and other countries to quickly develop and agree to implement concrete and enforceable actions to significantly reduce aviation's growing carbon pollution.

That won't be easy. But unlike politicians, Mother Nature doesn't negotiate or compromise. Soaring rhetoric and half-measures won't reduce the growing risk of extreme weather.

This election was a resounding victory for climate action. Americans were presented with the clearest choice yet on global warming, and they chose the presidential candidate who confronted the climate threat, not the one who turned it into a punch line.

This is a victory for all Americans who want to breathe clean air, drink safe water, and protect treasured landscapes. And it is a setback for the fossil fuel companies that invested so heavily in this election and have so little to show for it.

With 12.2 million Latinos projected to vote in November, the race is on to capture Latino support in key battleground states. But even as Gov. Romney scrambles to appeal to Latino voters, new polling confirms that he couldn't be more out of touch when it comes to our energy future.

Mitt Romney finally unveiled his energy plan, and it came so loaded with fossil fuels, we might as well call it the Jurassic Plan.

America helped restore the ozone layer through a combination of scientific understanding, public pressure, bipartisan support and industry innovation. I believe we can marshal those same forces to fight climate change, but we are not there yet.