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What's circadian-supportive lighting and do I need it in my home or office?

There is a lot of buzz about it, but what you really want is a window.




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Christmas Trees Given Jellyfish Genes Could Produce Their Own Light

The only downside, of course, is that your self-lit holiday centerpiece actually would be a Frankenstein tree.




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Study Shows That If You Shop Daily, You Live Longer

We have made the case that small fridges make good cities; now a new study indicates that small fridges make healthier people.




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Interactive Solar Art Lights Up New Sydney Space

The world’s largest permanent interactive light installation has been installed in Sydney's recently revitalized Darling Quarter.




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80-year-old wooden escalators repurposed into impressive sculpture

Instead of trashing these old treads, they have been made into a inter-looping work of art in the same station.




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Scientists Develop Potent Acids to Take Down Destructive Fluorocarbons

While their brethren, the dreaded chlorofluorocarbons (CFCs), may be on the wane, fluorocarbons -- a class of equally dangerous industrial gases -- are still wreaking havoc. As the name implies, the main distinguishing characteristic between CFCs and




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Ozone hole is officially shrinking, proof that international treaties can be effective

New NASA study offers first direct proof that the ozone hole is recovering thanks to the Montreal Protocol treaty and the international ban on CFCs.




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First-Ever Geoengineering Research Ban Considered by Convention on Biological Diversity

While preservation of the planet's dwindling biodiversity itself has rightly grabbed the headlines at the ongoing Convention on Biological Diversity in Japan, Science Insider points out an important geoengineering




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Passive House beats building code box in Ice Box Challenge

But is it a pyrrhic victory?




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Multifamily Passive House completed in Vancouver

These are very common in Europe but new to North America. We need a lot more of them.




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Not much to see in Vancouver's first Passive House apartment block

And that's just the way the architect and developer like it.




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All of the world’s greenhouse gas emissions in one awesome interactive pie chart

A visual breakdown of emissions by country and industry.




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Five Scary Fall New York Fashion Week Faux Pas

We usually don't like to point out the negative aspects of things here on TreeHugger, but when it comes to New York's just ended Fall Fashion Week, I am forced to ask, "Wha' happened?"




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New Wave Energy Device Could See 200 Commercial Units in the Next Five Years

The Searaser takes a novel approach to wave energy generation. New owners Ecotricity - pioneers of wind power in Britain - are aiming for mass deployment in the next five years.




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Solar and Wave-Powered Wave Glider Survives Hurricane Sandy, Transmits Dramatic Weather Data

The wave glider created by Iquid Robotics has passed quite a test for robustness. It coasted through the superstorm and provided real time weather data nonstop.




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What a diverted trip has taught me about packing

You never know what climate you may end up in...




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How Istanbul is extending the olive branch to Syrian refugees

Tourists can witness it firsthand, thanks to Intrepid Travel's partnership with a local NGO.




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Twitter-enabled vending machine gives out free seeds for tweets

To promote their fantastic garden grant program, Seeds of Change is bringing a seed vending machine and photo booth to several US cities, where visitors can tweet for seeds.




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'Charity: Water' Photo Gifts That Give Back

Ever since we took the kids to Florida, my wife has been saving photo memories in scrapbooks. Our two daughters like making the books, too, and I have to admit, looking at one of these handmade creations beats Flickr any




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Portraits of Londoners From Every Olympic Country Highlight City's Diversity

You can see these magnificent photo portraits of Londoners on a wall or on the web.




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Kids can 'drive' their parent with a helmet that honks, vibrates and flashes

Because the world needs yet more redundant, hard-to-recycle, battery-powered plastic toys whose novelty will wear off quickly.




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How big business can drive vegetable consumption

Forty companies just pledged to do their part to serve more veggies, helping the environment in the process.




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Serving the Impossible Burger, a meat-centric restaurateur's perspective

It's a veggie burger that actually bleeds. But who's the target audience?




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How discovering ice's secret could unlock alternative energy options

A long-suspected secret behavior of water molecules in ice is seen for the first time using a new technique that could help develop energy alternatives.




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Toyota's new Fuel Cell Vehicle: What it is, how it works, and how it drives

Mark your calendars: Toyota is promising (well, hinting very strongly), their 2015 model year collection will include a full-production hydrogen fuel cell vehicle.




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Toyota Mirai hydrogen fuel cell vehicle: We test-drive the future!

Toyota has finally released its vision of the future, 20 years in the making!




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Riversimple won't sell its Rasa hydrogen car, but will lease its mileage

Goodbye car ownership, hello "mobility as a service."




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City of Freiburg has a brilliant alternative to disposable coffee cups

Customers pay €1 for a reusable cup that can be returned to any participating business in the city center.




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German politicians fear 2020 climate goals are unreachable, but won't give up

Because they started setting aggressive goals early, it still leaves Germany ahead of schedule on Paris Climate Agreement commitments




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Architect Elrond Burrell on the subjective pleasures of PassiveHouse

It's not all about numbers, really there's more.




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Cabin Spacey offers 'pay-as-you-live, location-independent' prefab homes

This company is working to build a network of urban prefabs under a 'pay-as-you-go' model of home ownership.




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U.S. House of Representatives passes national GMO bill

This afternoon, the U.S. House of Representatives voted in favor of a controversial bill that seeks to set a unified standard for the labeling of foods containing genetically modified organisms.




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Toyota to Go Bold In Bid to Revive Flagging Sales

Toyota Goes Bold Even Toyota, the maker of the much revered Toyota Prius, has been unable to escape the fallout from the economic downturn. In fact, Toyota just posted its first operating loss in 70 years, and the company is responding with bold plans




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GM Volt Versus Toyota Prius: Which Design Type Will Be More Effective At Reducing Stack & Tailpipe Emissions, And Energy Consumption?

This is one of those comparison posts that that could draw many angry comments: like Could Hype Sell An Inferior Hybrid? - Ford Fusion versus Toyota Camry did. Please carefully read the caveats.




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Audubon and Toyota Team Up to Promote Volunteering, Give Away Prizes

The Audubon Society and Toyota are teaming up to promote volunteering for the environment by offering prizes, including tents and bikes, to those who log the most volunteer hours.Starting today, their project, TogetherGreen,




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Toyota Kills Most Inexpensive Prius Model, Raises Price $400 on Others

Image: Toyota Supply & Demand A few months ago, Toyota was quite afraid of the new low-cost Honda Insight hybrid. It even went as far as to make a $21,000 version of the 2010 Prius (aka Prius I) to try to compete with Honda on price. Well, seems like




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Cosmic Rays May Have Driven Toyota Vehicles Crazy

More than 8 million Toyota and Lexus vehicles have been recalled worldwide (including the 2010 Prius), and the National Highway Traffic Safety Administration has linked at least 52 deaths to unexpected acceleration in these vehicles. Although floormats




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Toyota's Thermo-Tect Lime Green paint saves energy and lives. Why isn't every car this color?

It's ugly, but it sure can keep that car from cooking, and it is going to be seen from a long distance.




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Do Lectures 2011 - Start Where You Live

So far in our Do Lectures 2011 series we've talked about the fact that Things Are Not Just The Way They Are, we always need to ask difficult questions and challenge the




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Clean Energy Revives Communities, Gets People to Work

Clean energy is creating jobs and boosting local economies nationwide.




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1000 US veterans to receive solar job training through Troops To Solar initiative

Thanks to GRID Alternatives and Wells Fargo, more than 1000 US military veterans and active servicemen will be getting solar industry job training and job placement.




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Renewable energy jobs have almost doubled in past five years

The rise of clean energy jobs is outpacing the loss of fossil fuel ones.




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Clever! Geothermal Power Plants Could be a Massive Source of Lithium for Batteries

Demand for lithium is growing very rapidly thanks to portable electronics and electric vehicles. What if we could get a lot of lithium cheaply, without building new mines?




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Radioactive Waste Is Piling Up in Japanese Sewage Treatment Plants, Some Sold as Fertilizer

The disaster at Fukushima may have faded from the news cycle, but the radioactive waste it left behind isn't going anywhere. At the Saitama sewage treatment plant, 169 miles from Fukushima, workers are dealing with tons of




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If you're going to live a one tonne lifestyle, it's easier in a Passivhaus

In which I try to clear up some misconceptions.




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TreeHugger is off to the Passive House Northwest Conference in Seattle

These are interesting times for the Passive House movement in America, and this should be a very interesting conference.




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New Life Science Building at University of Washington is described as "hyper-sustainable"

Or is it a missed opportunity?




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These immersive, glow-in-the-dark murals are for indoor stargazing (Video)

Using a self-invented "multiluminous" painting process, this artist transforms ordinary rooms into starry environments.




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This prefabricated house in Spain took five hours to erect

Using modular components pre-made in a factory, this modern home is airy, light and adaptable.




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Live Earth: "Largest Global Entertainment Event in History"

A few days ago we asked you, readers, what you thought of Live Earth. All in all there seemed to have been some great response to the 7/7/07 concert and today a press release was issued with some impressive numbers: - More Than 8 Million Viewers