Demographers are complaining, but Americans have many good reasons for not wanting so many kids.

Primary energy consumption was down, too.

For those who say it's too difficult...

There's symbolism here. Let's hope there's substance too.

This is green energy writ large. Very large...

One of the UK's "Big Six" energy companies has gone a dark shade of green.

The British government sees offshore wind as a genuine opportunity to lead.

The styrofoam substitute that they grow into packaging and insulation is the next big thing in building.

Tomorrow, real men eat quiche (cheese pi).

Sustainable designers everywhere honor you on this day.

California has been going through a drought for about 3 years now, with 2013 being the driest year on record.

This ambitious goal is all the more remarkable because NIPSCO is currently 65% coal dependent.

We are by no means helpless in the face of climate change.

A new study suggests we look to the past for guidance on how to cope going forward.

A microbiologist and an Anglo Saxon scholar decided to test a recipe from an Old English medical compendium called Bald's Leechbook, what they found surprised everyone.

An investor network managing $4 trillion in assets has warned investors that they should prepare for the inevitable -- a climate-driven "sin" tax on meat.

The availability and quality of fresh water to sustain a radically urbanizing world is unquestionably a core issue of our time and requires holistic environmental thinking at an unprecedented scale

It led to a series of other agreements that protected and cleaned up the Great Lakes environment

Dictionary.com picks the perfect word for our dystopian future!

By analyzing a 364-meter ice core, researchers have been able to go back in time and track the freezing and melting cycles of Antarctica's peninsula.

A gigatonne of ice here, a gigatonne of ice there... Soon enough we're talking about a meaningful quantity!

After ten years of work, the Antarctic Heritage Trust has done an amazing job of restoring and preserving.

... the Emperor Penguin! It vows to call for marine reserves in Antarctica to protect its imperilled species.

Lessons from Amundsen: travel fast and light with a small footprint.

Take subversive action in small ways.

We are now prisoners of the petrochemical industry.

I don't buy many plastic bottles, but the ones that I do will take some creative workarounds to avoid.

Some places have looked at paying people to recycle, but others think it makes more sense to charge people for their waste instead. When the UK talked about implementing a "pay-as-you-throw" scheme for trash, our readers were

Maine's taking a stand against oil usage and oil dependency--frankly the bigger issue than where we get our oil from, tar sands and other unconventional oil sources aside. As NRDC Switchboard reports, the state has passed a law

Organic wool comfort wear company Ramblers Way founded by Tom and Kate Chappell, of Tom's of Maine fame has come a long way since their first collection, comprised of natural blonde wool jersey knits

These 'living fossils' have survived mass extinctions over the course of their eons of existence, but it just might be two youngsters that save them from the human threats they face today.

From oldest to tallest to most sacred and more, we present a brief who's-who of arboreal heros.

There are approximately 2 million reasons to love trees ... but we'll start with these.

These skyscraping superstars are the stalwart examples of their species.

When you watch the video do you see a triumph of nature or the beady eyes of a predator?

From crayfish to parakeets, these species are at risk of disappearing from the planet.

37 species under national protection have been observed in the Ziwuling area, thanks to massive reforestation efforts.

The World Customs Organization and INTERPOL retrieved thousands of endangered animals during a sweep of arrests across 109 countries.

One of the '25 most wanted' lost species, the silver-backed chevrotain is a snaggle-toothed, deer-like species that is the size of a rabbit and walk on its tippy toes.

Doing street improvements for pedestrians and cyclists increases sales by 30 percent. So why aren't cities doing it?

A conference on sustainable construction in the Can of Ham is in denial about upfront carbon emissions

Ways to spend the day for those who'd like to skip the whole 'bloodsport of mass consumerism' thing.

The first affordable microwave changed the way we cooked- for a while, anyway

After another site makes a list, we add our own suggestions.

Image credit: El País According to El País on sunday, celebraty chef Ferran Adrià is plotting a zero emission premises for his restaurant elBulli on the coast of Catalonia, Spain. The 2010 chef of the decade (nominated by The Restaurant magazine) closed

Concerned about Asian carp? Meet the invasive cousins, you might say, of the monster fish. The U.S. Army Corps of Engineers has released a white paper on 40 high-risk species to watch out for,

"It's an emergency," say council members. "So let's act like it."

It's summertime, and the living is easy, and we are talking about air conditioning.

It is the first big city in the South to commit to being fully renewable energy powered.

It's a 340 ton rock, balancing over a crevice...forever.