New wind and solar will be cheaper than 96% of all existing coal by 2030.

Pioneers are already making inroads into the market. But once economies of scale kick in...

We used to say this stuff should be banned because it was always installed badly. Has anything changed?

A representative of the industry says I shouldn't be picking on fiber glass. He's right.

Haitian schools connect to the internet for the first time, powered by the sun.

The big question is how well will it be enforced and what alternatives are currently readily available.

Small-scale solar panels promise many off-grid applications for renewable energy, and the SolarPuff is a particularly elegant example.

This company proves that plastic waste can be a valuable resource.

Bluefin tuna is on the verge of total collapse. Maybe. It depends on who you ask. We may have been talking about

PNC Financial Services Group, based in Pittsburgh PA, has built a plant-covered exterior wall, "to make its headquarters building more energy-efficient." Looking like one of those huge billboards seen along an

How can a city destroy an edible garden on private property without legal permission? We also have the viral party-gone-wrong prank on Shell, the 12 most toxic fruits and vegetables, and more.

The queen led her minions to the engine of a Delta airplane, delaying the flight until the protected bees could be professionally removed

It's a number that's been thrown around a lot recently. There's a danger it will be misunderstood.

Just a quick one on ethanol and Southeast Asia: Chinaview.cn is reporting that Cambodia has opened the nation’s first ethanol production facility. Using cassava as a feedstock, at least initially all of the

Previously unknown species in a relatively undisturbed bioregion of the Mekong River in northeastern Cambodia have been uncovered by a recent study — 24 in total, including a so-called "corpse

A few short weeks ago it came out the China had plans in the works to place 20 hydroelectric dams on the upper

Australian researchers used LIDAR, the aerial laser technology, to rediscover the city of Mahendraparvata in Cambodia.

They may sound progressively eco-friendly, but a new Greenpeace report explains why they're not.

When made from the right materials, buildings can be a solution, not a problem.

"This is our last chance to avert a climate disaster. We must act now."

Perkins&Will's new Dallas office tries to do all three certification systems in one beautiful historic building.

One little trip can blow you right out of the water.

Landfill gas (LFG) isn't quite as sexy as some other alternative energy sources like wind or solar; still, TreeHugger thinks its an important part of our collective renewable energy portfolio. Plus, it's cool that landfills (and the stuff that fills

Duke Energy Corp. is reportedly discussing with BMW Manufacturing Co. the potential for building a solar energy plant at the car company's Spartanburg South Carolina USA facility. Well, isn't that a German sort of response to US government pressure?

During a recent interview, BMW chief executive Norbert Reithofer revealed that the German automaker was considering bringing a battery-powered vehicle to the U.S. market by 2012 in an effort to meet more stringent

Despite the fact that Venice, CA seems to be the epicenter of SoCal's green lifestyle movement, the 24th annual Abbott Kinney Festival that took over the city's main drag on Sunday, September 28th was far from eco-friendly. After claiming last year

What happens when you give a futuristic cloth-like material designed for BMW coupes with a bevy of design students and funding from one of the world's leading

Wouldn't it be nice if clean tech advocates could, for once, just stop fighting with each other?

In a funny twist, one of the stars of an extremely popular car show (Top Gear) whose script smeared Tesla is now going electric. James May is getting a BMW i3.

No "do the bright thing" for cars; instead, the BMW X6 designed to "look particularly menacing."

Though known colloquially as food that is grown to be more healthy (and is more expensive), in order for organic food to be certified as such, it must be produced under specific, legally-regulated standards and be subject to testing in order to retain

Ecological footprint: what is it? An analysis that gauges our impact on the planet's biological systems, the ecological footprint measures human consumption of natural resources in comparison to Earth's ecological capacity to regenerate them.

In addition to metrics like ecological footprint, each of us (and each of the products and services we use and consume every day) has a carbon footprint; it's a way to measure the relative impact of our actions -- as individuals, as businesses,

Getty Images Volatile organic compounds: something's in the air You can't see them, but they're all around us. They aren't listed as ingredients on the objects we bring in our home, but they're often there. They're volatile organic compounds, or VOCs, a

Water, water, everywhere, so let's all have a drink (or so we all learned as kids, right?), but it's definitely not as easy as that these days. In honor of World Water Day (which may or may not have been today), let's

For as long as our planet has spun 'round the sun, there's been solar energy cascading down on the earth, and, for a long time -- since the 7th century B.C., when glass was used to magnify it -- humans have been working to

Paper or plastic bags: which is better? It's an age old question, when it comes time to check out when grocery shopping: paper bag or plastic bag? It seems like it should be an easy choice, but there's an incredible number of details and inputs hidden

Teachers, are you looking for ways to teach green values to your students? We've got ideas lined up for you!

In what is said to be a first for automakers, Ford is developing foams and plastics using captured carbon dioxide, which could be integrated into the company's vehicles within five years.

The goal could be reached even earlier, if Scots changed what they eat.

Agriculture has become the single largest driver of climate change. It's time to start farming for the whole planet.

Opposition from the G77 Nations and the Vatican led to the removal of the words 'reproductive rights' from the Rio+20 text, leaving in 'acceptable modern methods of family planning'.

How to slow it? Access to voluntary family planning for all women. It more than pays for itself, reducing unwanted pregnancies, abortions, unplanned births... And helps reduce humanity's environmental impact.

Matt Ridley might be right about the world not ending on December 21 this year. But the rest of the article is delusional.

And there are plenty of humans who would agree.

Graphic designer Jack Hagley's new infographic shows the world's population as 100 people.

The most recent U.N. demographic projections show world population growing to 9.3 billion by 2050, an addition of 2.3 billion people.

The incomparable Swedish medical doctor and statistician Hans Rosling tackles a very perverse and tenacious myth about overpopulation.

This large format photo book features hundreds of stunning images highlighting the effects that our global population of 7 billion (and growing) has on the Earth.

Says the United Nations Department of Economic and Social Affairs.