Under the Clean Air Act, the Environmental Protection Agency can set standards to curb carbon pollution from its largest source -- coal-fired power plants. Even while Congress remains paralyzed, the president can move forward.

The EPA is the cop on the beat in charge of protecting the air we breathe and the water we drink. All across the country, families are counting on the EPA to guard against dangerous pollution in our air and water and toxic chemicals in our homes, food and everyday products.

These omissions and shortcomings on either side of the equation only stand to bolster the most important claim: benefits outweigh costs more than 10 to 1 for all major EPA regulations adopted in the past decade.

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...

Under President Obama's leadership, we've already taken the single biggest step that the U.S. government has ever taken to reduce global warming pollution -- the implementation of a series of historic new rules to increase national fuel efficiency for cars to 54.5 miles per gallon by the year 2025.

As the World Bank warns, a possible 4 degree Celsius increase in global temperatures by the 2060s will lead to a "transition of the Earth's ecosystems into a state unknown in human experience."

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.

This is a pretty straightforward cap-and-trade proposal very similar to the one currently in place to control acid rain. In fact, there was a time when members of the GOP were the most enthusiastic advocates for cap-and-trade.

Here's some more good news that happened in spite of the current Congress, which has been more interested in weakening the Clean Air Act than enforcing it. During the past two decades, the air in our national parks has dramatically improved.

Our children are experiencing a spiraling downhill decline to winter. But there's hope!

The average American may not be aware of how these sequester cuts will impact the air that they breathe. Perhaps, most surprising to them, would be how the affected programs that reduce air pollution will shape the state of national health for everyone.

The surest sign that President Obama is willing to make renewable energy a priority will be when we stop hearing about "all of the above" and start hearing about the need to set priorities and make choices.

As a result of climate change, by mid-century, ships could sail directly over the North Pole, according to a new study. The Northwest Passage is now only accessible to a few icebreaker ships on average one summer of every seven years.

The god of wealth might bring bucks to doorsteps... and a blazing fireworks display may add to the festivities of the day, but those noxious clouds of smoke snaking around Beijing cannot stave off China's legacy that accounts for nearly half of global coal consumption.

While President Obama's focus on climate change is a welcome, albeit belated, shift, it remains to be seen whether he will match words with action. More and more environmental organizations and activists are prepared to keep the pressure on to ensure he does.

As Vice President Joe Biden reaffirmed the Obama Administration's commitment to combat climate change, new data indicates carbon dioxide emissions in the United States in 2012 dropped to their lowest levels since 1994.

Obama's words regarding climate change will soon be tested when he decides whether or not to approve the Keystone XL pipeline that will carry tar sands from Canada to the Gulf Coast. His green energy agenda could be defined by this decision -- even though any action is still months away.

We're in trouble. If we don't act -- quickly -- the consequences could be devastating. But the good news is that President Obama has extremely powerful existing tools to fight climate change right now -- if only he would use them.

After months of negotiating, lawmakers reached an agreement to avoid the so-called "fiscal cliff." Featured in the measure is an extension of a renewable electricity production tax credit for wind, geothermal and some biomass projects.