One of the biggest challenges of making cities more bike friendly is that most of the road space is already "used up." Adding bike lanes means removing something. That's when a bit of perspective comes in handy.

They are one of the most iconic features of the city, but some of them are really scary.

This architecture and engineering design used to be all the rage. What happened?

Part art, part meditative process, these works are created with plant material harvested from the artist's urban garden.

Melinda Hanson talks to TreeHugger about taking back the streets.

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,

All the foodies are outraged by the New York Times Expose on the marketing of cheese. The front page story While Warning About Fat, U.S. Pushes Cheese Sales by Michael Moss describes how Dairy Management helps

Of course, when purchasing a new appliance, it makes sense to go with the most efficient energy star rated appliance. BUT, buying a brand new efficient energy star rated appliance is not always greener or less expensive

One of the big beefs with Energy Star for housing is that all it cared about was energy; beat the standard code by 15% and you got it. No matter that the best way to make a house efficient is to make it tight, leading to all kinds of air quality

Walmart has been in the sustainability spotlight over the last few years, both for implementing its own efficiency measures and for raising the bar for industry at large. Some view these initiatives with skepticism because the

A round home is British Columbia's first home to be Energy Star qualified, a topic of contention on TreeHugger.

Not waiting for national legislation to set a price on carbon and kickstart the journey to a low-carbon future, Montgomery County, Maryland has enacted one the country's first carbon taxes. Passed by a vote of 8-to-1 the tax

Sewage overflow is a major problem in the Big Apple, but with a little more green on city rooftops, the overflow could be prevented.

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

A traditional dwelling has been preserved by renovating it to include a new office, library, kitchen and guest room.

Kate Stohr, the co-founder of Architecture for Humanity, dropped me a note suggesting that I have a look at their Year in Review of their work in Haiti. I did, and couldn't help but come to the conclusion that it was really boring.. I mean really,

Haitian schools connect to the internet for the first time, powered by the sun.

The Toronto designer has created an unprecedented collaboration, weaving together elements of craft production, community development and modern design.

The peripatetic international designer explains it all in Core77

This company proves that plastic waste can be a valuable resource.

Get simple but powerful personal actions delivered to your inbox every 3 days; 30 actions in all – are you up to the challenge?

There are so many missing teeth, so many vacant lots in so much of rust belt North America. We showed how Superkül took back a sketchy main street store in Toronto for their live/work space; Now Azure Magazine shows us how

How can a city destroy an edible garden on private property without legal permission? We also have the viral party-gone-wrong prank on Shell, the 12 most toxic fruits and vegetables, and more.

One more US city fully commits to transforming itself into a better place to live for all.

A growing number of cities are getting serious about tackling the climate emergency.

With a population that approached 1 million and a surface area of more than 115 square miles, the Khmer city of Angkor in Cambodia was the largest preindustrial settlement on the planet. After coming into being during the ninth century A.D., it thrived

There are only an estimated 116 wild Asian elephants in Cambodia's Seima Protection Area, and until now most of the photographic evidence of them has be taken by camera traps. New footage released by the Wildlife Conservation Society changes that. The

Australian researchers used LIDAR, the aerial laser technology, to rediscover the city of Mahendraparvata in Cambodia.

It's time to talk about ... wait for it ... the problem with hangers.

Studies show that taller buildings are simply less efficient, and don't even give you any more useable area. Why bother?

The KISS principle applies to everything, including building design.

If 10 percent of Americans adopted these 7 changes, we could cut total domestic emissions by 8 percent in 6 years.

One little trip can blow you right out of the water.

At TreeHugger, we like to keep things realistic, raise a skeptical eyebrow to potential vaporware, and to keep in check our giddy inner children that get sweaty palms when we see something like the VentureOne. After all, a bright idea, some capital, and

One more example of how words can become completely meaningless and even contradictory.

Pollution from power plants, cars, and other transportation is a well-known contributor to outdoor air pollution, but our indoor air quality is often worse; it can be up to 10 times worse for you than the air outside. Microbial pollutants like mold,

Getty Images Volatile organic compounds: something's in the air You can't see them, but they're all around us. They aren't listed as ingredients on the objects we bring in our home, but they're often there. They're volatile organic compounds, or VOCs, a

Run on waste heat, this commercial facility is the first of its kind in the world, extracting CO2 from the air and piping it to a greenhouse farm to grow veggies.

Excessive population growth presents an immediate environmental danger greater than climate change.

The 21st century needs a redefinition of security, to something broader than military terms, a relic of the Cold War.

The most recent U.N. demographic projections show world population growing to 9.3 billion by 2050, an addition of 2.3 billion people.

Many vegans don't realize that there's 'meat' in their electricity supply.

Primary energy consumption was down, too.

One of the UK's "Big Six" energy companies has gone a dark shade of green.

The country's onward march of low carbon energy shows no signs of stopping.

Home owners are going solar, without having to put anything on their roof.

Savings in snow removal alone would have paid for it in ten years.

Now we'll be able to see air pollution information along with city maps.

Providing clean water in areas with minimal local resources may be as simple as implementing this ingenious DIY water treatment system.

This ambitious goal is all the more remarkable because NIPSCO is currently 65% coal dependent.