Earth's atmosphere hasn't had this much CO2 in human history, and possibly not since the Pliocene Epoch about 3 million years ago.

The wildfire in the Florida Everglades has spread to 32,000 acres, and officials are using all the resources they can to contain it.

You can watch the live stream of the conference and follow my live tweets from the event.

Food news from around the web for your weekend reading

Serving chili, jambalaya or chips n' dip at your Superbowl 44 shindig? Make sure your cupboards are stocked with bowls made from eco-materials.

Looking to avoid a date with pesticides this Valentine's Day? Outfit your love <s>dungeon</s> den with stylish sheets and bedding made from organic cotton and o

Grizzlies becoming unbearable, oil kills Gulf coral, GOP sparks power struggle, and more.

Check out the amazing transformation one man goes through after hiking from Georgia to Maine.

Dale 'Grey Beard' Sanders, 82, hiked the entire Appalachian Trail in a year.

From a man wearing a minotaur mask to a collection of taxidermy, these fascinating images were the 2018 Sony World Photography winners.

We've got picks that include documentaries, fantasy, fiction and even kid movies.

Walter Carr, a dedicated young employee, wins accolades in Alabama for going above and beyond to get to his first day of work.

EPA Administrator Lisa P. Jackson and Transportation Secretary Ray LaHood are just two of the great speakers scheduled for this year’s green jobs conference.

EPA Administrator Lisa P. Jackson delivered the opening keynote at the 2011 Good Jobs Green jobs conference.

The USNS Henry J. Kaiser is carrying 900,000 gallons of biofuel blended with petroleum for evaluation and testing.

From pistachio shell-powered eco-cities to tiny houses on the moon, this spring certainly wasn't short on starry-eyed intrigue and bold ambition.

Here are the films to catch at the country's largest environmental film fest — including one about making saké and the tragic industry of trophy hunting.

The Spitzer Space Telescope is so sensitive it can see objects optical telescopes cannot. Here are some incredible images it has helped capture.

2012 saw the highest rate of alternative, renewable energy sources in the United States.

I’m making this trek to ask Maine Gov. Paul LePage to lead, follow, or get out of the way of clean energy development.

In a nation where transportation claims 20 percent of CO2 emissions, train travel will soon be a zero-emission affair.

Add this kitchen mainstay to your arsenal of natural cleaners.

From gift boxes to fun furniture, there are all sorts of inventive ways you can use handy chalkboard paint.

From cleaning your tub with fruit to organizing towels, try these quick tricks for the loo.

These tips will help you save money, time and effort while you get your house sparkly clean.

Student Jack Ross Pilkington is working to save dying bee populations and has even become a bit of a beekeeper.

Video: Newscasters say relationship may be old news, but it does add a new twist to a day of reunions.

The new company, Deep Space Industries, Inc., announced on Jan. 22 that it plans to mine asteroids for metals, water and other resources.

We can't just build better; we have to change the way we live.

The oil leak may be releasing thousands of gallons per day, but after 14 years, it is finally at least partly contained.

Here's a rundown of the top 11 spaceflight stories of 2011, from the last mission of NASA's venerable space shuttle program to China's first-ever docking of two

Visiting Florida's Space Coast ahead of next week's primary, the GOP presidential candidate vows to build a permanent U.S. colony on the moon.

Space shuttle Endeavour's highly anticipated arrival in Los Angeles has been deferred by a day.

Space shuttle Endeavour has hit the road in Los Angeles to start its two-day journey to its new home.

NASA will send off the "Sunjammer," a 128-ft solar sail, to record space weather and study the Sun.

Here's a handy cheat sheet to help you keep the spacecraft straight.

Although a recent renewable energy bill stalled, the hurricane-ravaged territory isn't giving up on its fossil fuel-free aspirations.

District of Columbia lawmakers approve legislation that fast-tracks the city's bold clean energy goals.

Naturally occurring bacteria gobbled up at least 200,000 tons of oil and natural gas that spewed into the Gulf following the BP Deepwater Horizon spill, a new s

The oil giant has pleaded guilty to 12 felony counts and will pay a record $4.5 billion fine. Three of its employees have also been charged with manslaughter.

Mother's Day Gift Guide 2010. While Mother Nature is the main event this week, don't forget that there's another Mother-celebrating day just around the corner..

Human mothers have a relatively long gestation period compared to the rest of the animal kingdom, but a few animal mothers go even further. Here's our list of t

While Mother Nature is the main event this week, don't forget that there's another Mother-celebrating day just around the corner...

While Mother Nature is undisputedly the center of attention this coming weekend, don't forget that there's another Mother-celebrating Sunday on the horizon ...

Think sustainable pink for mom this Mother’s Day when you’re planning your celebrations.

Engineer Henry Liu is honored for inventing a way to transform toxic waste into environmentally friendly bricks used for construction.

Air pollution may be responsible for more than 2 million deaths around the world each year.

A new initiative in India will employ up to 300,000 youths in an effort to improve air quality and provide opportunities to the unemployed.

The air inside your home can be more polluted than the air outside. Want cleaner air? Here are 11 natural ways to clean your indoor air without using chemicals.

Meet 15 rare animal species whose futures could be determined — for better or worse — in 2015.