It's been forty years since Nixon and Trudeau signed the original; it's time for an update.

This long, cold winter has created the most ice cover on the Great Lakes in 20 years—and with ice cover usually at its peak in mid-March, there's still time for records to be broken.

Another signs that the poles are warming fast.

It's a mix of good design, a tough standard and sophisticated engineering.

Acorns are piling up around the U.S., threatening to cover some cities in nuts. Not really, but there have been an "exceptionally large number of acorns" dropped by oak trees around the country this year, Chicago-area experts say. This

Don't let a passing crisis, serious though it is, distract you from the real fight.

Yesterday I wrote about a mom who was convicted of vehicular homicide after her son was killed by a drunk hit-and-run, because she crossed the street from a bus stop without walking almost half a mile to the traffic light. Today Walkscore has released

A bright white antelope with long thin horns, the Arabian oryx is thought to have inspired early stories of unicorns. (Its two horns appear as one when viewed from the side.) And until

When you've got a lot of driveway runoff, some careful landscaping can put it to good use.

As the only canids that can climb trees, gray foxes frequently drag fawn and rabbit skeletons onto the branches with them.

What does it feel like to be an arch? Very different from how it feels like to be a cantilever.

Welcome to some of the most bizarre social behavior on Earth.

They're non-toxic, waterproof, and cute.

The Glowing, Glowing, Gone is a brightly somber campaign calling for urgent action against climate change.

Made with a patented energy- and wood-saving technique, this Corelam collection is perfect for those who move a lot.

Lots of great Food Day events across the country, but New York's will be particularly tasty and loud.

No one loves an apple more than a schoolteacher, but even they could learn a thing or two about the best way to eat it.

These reefs live in murky water with low levels of light and are likely to survive rising sea levels, researchers say.

Yet another reason why we need a more resilient food system.

Really, there is a lot to love about his work that applies to green building. Really.

Something to put all the composting, shorter showers and EV talk in perspective.

Schools are closing classrooms and going online all over the world. This may be as much of an opportunity as it is a crisis.

A blog confuses corrugated metal with containers on a project that could have been interesting for its own sake.

In the "sleepy neighborhood" of Baldwin Hills in Los Angeles, a modern Proto Home sits among a mix of single-family dwellings from over the last few

In a world of rapidly disseminated information, and misinformation, the WHO has published a list of mythbusters.

There is a new use for your smashed iPhone: a clock.

Despite Natura's seemingly excellent and forward-thinking business model, their list of ingredients is surprisingly awful and toxic, which calls into question the B Corp certification standards.

Experts blame urban sprawl for the increased number of attacks.

New research finds that a two-pronged approach is necessary to fight things like sea-level rise and ocean acidification.

It's time for a rethink about what's really important in a home.

A key industry association is working to keep warming to "well below" two degrees.

Concerned about the threats facing coral reefs, this artist is creating bright, tactile reminders of what healthy corals look like.

These striking works combine natural materials with artificial processes to create crystallized surfaces reminiscent of coral.

'Coral Garden' is a handcrafted installation that's inspired by the world's threatened coral reefs, and made with upcycled materials.

Sony, McKinsey & Company, Royal Bank of Scotland and WeWork are all committing to going all-out for clean energy.

Even though it took 6 months to find an alternative, Coop refused to stock microwave popcorn because of the health risks to customers.

A bit of weekend prep work goes a long way.

Among other things, the data reveals answers about the size of blue whales, the largest organisms to have ever lived on Earth.

Until now, no species has had such a profound effect on shaping the Earth's biosphere as the humble broiler chicken.

Eco-architect Michelle Kaufmann talks to Eric Corey Freed about his book Green Building for Dummies, disco balls and the death of Pergo floors in this TreeHugger exclusive from West Coast Green. Eric is the principal architect at organicARCHITECT, and

Watering problems are the leading cause of poor health for houseplants; here’s how to give them what they need.

You'll be surprised at the decorative potential contained within the recycling bin.

You don't have to have an entire garden room to make a statement with your indoor plants.

How about using the light from already existing street lamps to spark off the festive season? Here are some off-the-grid parasite lamps so to speak, that look good by day!

Our photo of the day delivers a bit of winter reverie from the waters of Australia.

The Cornell Lab of Ornithology is a world leader in the study, appreciation, and conservation of birds. But the vast educational opportunities it offers aren’t reserved only for Ivy League students.

They can dilute the wild varieties, threatening their existence.

Markets have shrivelled, storage is full, and redistribution networks are lacking, putting farmers in an awful predicament.

This small apartment's 'library wall' functions as a way to keep the bed out of view, while also storing books and things.

This step-by-step how-to guide shows you the way to make a wooden record that is as visually beautiful as it is aurally beautiful.