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

At first it sounds like any other reality show: "Candidates will be put through a series of tough physical

It has become a trillion dollar industry where nobody wins.

It's urban, Passive House and prefab. What's not to love?

The planet is facing some major problems. Just how much impact can a single person's actions have?

A new study says it is, and we speak to one of the authors.

Has the Costa Rica Foreign Minister really just suggested that the Sea Shepherd founder might voluntarily go to Costa Rica to face trial?

But what is the best criterion?

The building is handsome and sexy, just like Bjarke. But this is Calgary, and you need a warm jacket in winter.

As most environmentalists know, there are hidden costs behind most price labels. This video explores how to uncover those facts.

Achieving 100% zero waste isn't always feasible, but the path toward zero waste comes with its own rewards.

Who needs flying cars when you can have flying trains?

This artist mixes and matches up jigsaw puzzle pieces from different vintage puzzles to create mind-bending collages.

Welcome to almost 30 percent of the world's forest cover.

Image Source: Preserve Dear Pablo: Does recycling your toothbrush really make a difference? Doesn't mailing it back do more damage than the recycling avoids? It is true that mailing anything has an impact, but is it more than the recycling itself? To

Researchers are developing computer simulations that can improve agricultural success.

Forest ecosystems sequester large amounts of carbon in vegetation and soils, off-setting the carbon emissions we produce and mitigating climate change. The boreal forest and its associated wetlands, in particular, provide critical carbon storage ...

They may be giving up four walls, but they are getting a lot in return.

In an homage to influential images of Earth taken from outer space, this art installation takes it up a notch by livestreaming views of Earth in real-time, prompting us to contemplate the bigger picture.

Even armageddon has a silver lining.

It's a TreeHugger tradition, and it's time to declare our independence from these dangerous and polluting anachronisms.

Yet more ways that cars and trucks are killing us and ruining cities.

The sharing economy is built on reputation. So is online social gaming. Now the two are coming together.

The number of people flying between German cities has dropped 12 percent.

In a word, yes. We don't have to buy what they're selling.

Beware of the gilets jaunes, says Philip Stephens.

This is a housing form that we should be building a lot more of.

It can take hours before test results clue authorities about hazards in water supplies. The AquaBioTox uses biological sensors for immediate feedback.

In advance of EPA's coal ash standards, a mother of four talks about her family's health problems due to nearby coal ash ponds.

The meat vs. veggies debate is a lot more complex than it seems at first glance.

If e-bikes are going to replace cars, they should be taken seriously and maintained properly by people who know what they are doing.

We covered this subject before but I got it wrong. Peter Flax of Bicycling Magazine got it right.

Home-use pesticides many have worrisome toxins, so researchers set out to learn if the natural alternatives are effective.

UK brewer Seven Brothers has partnered with Kellogg's to use some of its less-than-perfect cereals.

Another good reason to move to Colorado.

Put your poop to work; it's fuel for a biological furnace.

Here's the drill on the Earth Drill toilet.

A new study from Pew Research is totally depressing, showing how left and right are moving further apart.

Shoppers like to think they're in control of their own food decisions, but there's actually a complex web of manipulations between supermarkets and food processors going on behind the scenes.

Robin Shreeves of MNN gets it right in this silly discussion.

Only it can provide the rejuvenation and entertainment that cannot be found elsewhere.

Less truly is more in this gem from Fresh Prince Studio.

Why should Fox News have all the fun?

Because it is really a Solstice Tree, and it is all about life in a harsh climate.

It comes down to the plastic. I want as little of it in my life as possible.

From supporting local farmers to boosting happiness, there are many reasons to use a real conifer in your house.

Serious cooks are serious about gas, but it's time to give it up.

All new clothing items from now on will be made with fake fur.

Shipping containers are the base for an instant "lush urban oasis."

Surely there's a way to ditch our wasteful, disposable habits.