Architype demonstrates that simple forms and careful window choices are the way to build efficient, affordable homes.

When cars first began appearing in the late 19th century, some cities moved to ban them -- but there is still one place in the US that has yet to change its mind.

Rev. Richard Cizik and the nonprofit New Evangelical Partnership for the Common Good have released a video message to President Obama calling on him to do more to protect public lands from destruction by private industry.

It's not just renewables that are driving down emissions.

By 2017, global e-waste rates will increase by 33% to 65.4 million tons per year—the weight equivalent of almost 200 Empire State Buildings.

The prime minister also mentioned holding companies responsible for the packaging waste they create.

Unfortunately, people like the slogans a bit too much.

They do this so well in Montreal.

Michael Pollan writes in the New York Times about the connection between the American diet and the cost of health care; Surprisingly, conservative writers like Marie-Josée Kravis are saying much the same thing,

The Earth Advantage Institute promotes a green building standard from the Northwest that combines the energy requirements of Energy Star with healthy home attributes like air quality, environmental responsibility and and resource efficiency. I thought

Look Ma! No heatsink!

The state of Maryland has already shown a proclivity towards environmental programs—it has embraced wind power via positive legislation, for one. Now, it's going to clean up its wetlands. The Maryland chapter of the

This reconstruction scheme in China encourages resilience and self-sufficiency.

A tropical skyscraper by WOHA and Patricia Urquiola is wrapped in a vine-covered sunscreen.

As subsidy-free renewables proliferate, it will become harder to derail decarbonization.

Main Street retail is vanishing under pressure from online shopping and rising rents. There are good reasons to save it.

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

On land, slugs are far from nature's most beautiful creatures--but underwater, the family of shell-less creatures known as nudibranchs come in bright neons, glowing pastels, and vibrant primary colors. The 3,000 different kinds of nudibranchs get their

Slugs as we know them aren't the most colorful land-based creatures, but the shell-less mollusk known as nudibranchs (meaning "naked gills"), or sea slugs, are the complete opposite: The more than 3,000 different members

In Haida Gwaii the trees are so big that you could live in them.

Don't give up; Collective and individual actions can change the world.

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

"No justification can be possible for this nonsense."

The latest UN report on sustainable development reads like the TreeHugger archive, in terms of sustainable development solutions.

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

The Bay Area needs affordable housing. And it needs clean energy. A new campaign supports both.

A recent report by the U.S. Environmental Protection Agency concluded that 55 percent of U.S. rivers and streams are in poor condition. When we see a number like that we might not realize how many rivers there are in the US...

3D maps created by Climate Central show how sea level rise could change some familiar cityscapes.

Why are we wasting such a valuable resource? Where will it come from if we don't drill for natural gas?

Lack of diversity makes grapes vulnerable to climate change.

This $2 million project, funded mostly with private money, is billed as the most comprehensive look at the Chicago waterway system since the reversal of the Chicago River more than 100 years ago. This

Great Lakes residents would be paying this off for 47 years ... but reaping the benefits for just as long.

The 10,000 year-old ice shelf is half the size of Rhode Island; its collapse will add greatly to global sea level rise.

Wind on the snow dunes of the Ross Ice Shelf causes a near-constant hum that is as beautiful as it is haunting.

The French government has set a goal of eliminating all single-use plastics by 2040. Phase one has begun.

This year, Gandhi's birthday will be marked by a national crackdown on six specific plastic items.

Hawaii's most populated island is implementing tough new rules for packaging.

A scientific assessment has confirmed enormous amounts of waste and definite harm to wildlife.

Who says you can't have both beauty and efficiency?

This year's Stress in America survey by the American Psychological Association might make you feel not so all alone.

London Fashion Week was disrupted by protesters who want the industry to declare a climate emergency.

Instead of heavy metals, petroleum products, and toxic solvents, this printing ink is made with algae grown by Living Ink.

I have been trying to write something punchier than David Goldberg at Transportation for America did but I cannot, this event is "so utterly outrageous, so emblematic of the failure of our current transportation

New York Times article asks a lot of questions, and doesn't deliver a lot of answers.

Where does the FDA stand on a BPA ban?

A new bill in California would make digital receipts the default; here's why it's a big deal.

Yes, in theory. Doing it in practice is a whole other story. This is another example of how the hydrogen economy is a fantasy.

As it turns out, personal energy choices can be contagious.

Our photo of the day is a lesson in singing and building.

Pigeons sure, but urban eagles and city vultures? A beautifully illustrated new book, Urban Aviary, spills their secrets.