A group of tiny home owners have converted a formerly vacant lot into a small but vibrant place to demonstrate the possibilities of living happily with less.

Study documents 5893 leaks of explosive, global warming gas. It gets worse: testing four months after the leaks were reported indicated that 9 were still emitting dangerous levels of the gas.

After pilot programs in international markets like Japan, Singapore, the United Kingdom and Brazil, FedEx will deploy a fleet of electric delivery vans in Washington DC.

Built as part of a community of tiny homes in Washington DC, this contemporary solar-powered tiny home collects its own rainwater and has a thoughtful interior to boot.

A detailed geological-drilling study warns of threats to the region's monuments, roads, wildlife refuges, and military installations.

If we can put a center-running bike lane down the center of Pennsylvania avenue, we should be able to do it almost everywhere!

All over North America we are letting our infrastructure rot and short-circuit.

Nobody is actually asking the question, because pedestrians don't matter, do they?

After a tough tournament, a sorry sad inaccessible bus stop in Silver Spring, Maryland wins the dubious honor.

Work from your driveway or your site with this cute little workspace.

Calling all believers in science! The next big march is being planned, this time in the name of science. Here's what you need to know.

It's mostly a fake, completely rebuilt in the early 1950s.

The 25-pound lady bobcat was last seen on Monday morning.

Just read the headlines and weep

As baby ducks get a boost at the Capitol Reflecting Pool, at least one politician’s Grinchesque response has duckling defenders up in arms.

It's not a big deal but it could become a big symbol.

The New York subway, The Los Angeles Metro, and more ranked by someone who travels a lot but never drives.

Fitwel is all about healthy living, and it's going to be big.

Words are powerful. The Washington Area Bicyclist Association is choosing good ones.

This is what a linear economy looks like when it is broken.

A modest proposal

We are still befuddled by technology but bumble along.

On this National Walking Day, a look at the excuses cities use to make it difficult to do so.

It doesn't have to be all about politics.

And things feel eerily familiar today.

Another look back at some great designs for inexpensive homes.

The private car has dominated our design dreaming for a hundred years; no wonder it is so hard to break the habit.

Boxy But Beautiful designs have been around for a long time, and there is a real logic to them.

Rachel Carson's book that many say launched the environmental movement was released on this day.

The American architect has been on TreeHugger many times.

We have seen this movie before.

100 years later, there are still lessons to be learned: Eat less, eat better, don't waste, and share.

100 years ago the Great Molasses Flood started another flood, one of regulations to protect people's health and safety.

It's like a moving High Line, and is still a very good idea.

And God bless the one-third of Americans who actually believe in natural selection.

On March 22, 1922, the discovery of insulin was announced. Here's what happened after.

This is very good news. So much so that it might soon stop being news.

Britain has already made great progress in decarbonizing the grid. It looks like there's more to come.

The Viking Grace was already low emission. Now it's going further.

The fall of coal has been swift in Britain, and there's no sign of it ever coming back.

What a difference a decade makes.

And profits will go to giving land back to nature.

I can't imagine anyone doing an ad like this for coal.

Even if you factor in offshoring of jobs and industry, emissions are way, way down.

Our photo of the day comes from the vibrant hills of California.

Our beautiful photo of the day comes from snowy Calgary, Canada.

Our photo of the day comes from Kananaskis, Canada.

You have to examine the reasons for why the clutter happened in the first place.

"Don't donate if you wouldn't give it to a mate."

We're loving the move toward quasi-edible ingredients, plastic-free packaging, and refill pouches, among other things.