Design firm Castor once again gives new life to old dead things.

By 2020 every light bulb is supposed to put out 45 lumens per watt. It's a Bush-era regulation that the current government wants to roll back.

A small apartment gets enlarged by knocking some walls down and adding a multi-functional staircase and mini-loft.

This apartment's new design unifies the small space with a simple palette of materials over three levels.

Decluttering techniques are a big trend now. This small apartment is designed with organizational principles right from the start.

We can and should go back and forth about the merits, demerits, risks and potential rewards of the spectrum of geoengineering techniques, from the simple but slow and effective (like afforestation) to the well, more fraught with potential catastrophic

Researchers are working on "reprogramming" cells to create customized organisms that can be used for everything from new medicines to environmental clean-up crews.

A small apartment is made to feel larger with custom cabinetry and more.

An old warehouse is transformed into a three-level open office with lots of shared spaces for a tech company in Vancouver.

Max Fordham's house is "simple and practical" and mostly all natural.

Wave power is the oft-forgotten cousin of solar and wind power. It has huge potential, but it is not quite as far along as the better known sources of clean power, so it tends to be overlooked.

The agency is offering up open source modeling software to scientists, engineers and garage inventors too.

This compact shelter is a place for a family to spend their summers in the middle of nature.

We all can't go to Copenhagen this week, but there are so many ways to make our voice heard nonetheless. ThisPlace09 is an art and Twitter project that conveys personal thoughts about climate change to the delegates and the

Today there was new space added to the Twitter HQ, doubling their size. Designed by the lovely and talented Sara Morishige Williams (@sara), the newest spaces are consistent with the philosophy of the existing offices

Who says you have to be human to be a popular user on Facebook and Twitter? These six animals have more friends, fans, and followers than most people.

A "moot court" will be held over Twitter for the first time ever, and students from 5 major Canadian law schools will argue an environmental law.

Come one, come all, witness The Twittertape Machine that prints a feed of your tweets and mentions on Twitter.

The organic snack bar company has created the first geo-location Twitter campaign to promote its trail mix bar.

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.

There are a number of reasons why this is an excellent idea.

Now that's an infrastructure project!

Emerging out of a park in Seoul, South Korea, this dynamic piece of urban furniture offers a place to sit, walk and play.

The company will spend $1 billion and employ a team of 100 to find a sustainable alternative.

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

It's win-win: you don't heat up the kitchen and you still get the best dessert ever.

It's a great way to spend time outside and travel for cheap.

We previously reported that phthalates were linked to miscarriages. Now we know they are linked to flooring.

The Florida legislation will go into effect in 2021 in an effort to protect the world’s third-largest barrier reef ecosystem.

If the harmful chemicals weren't bad enough, new research finds that many e-cigarettes also include unhealthy biological contaminants.

These delicious dessert squares skip the crust and the refined sugar. They're quick and easy to make for lightly sweet snacks during fall and winter.

After a long-lasting and loving monogamous relationship between the US Green Building Council and the Forest Stewardship Council, it seems the USGBC is considering, not a break up, but definitely thinking

Here are 4 common problems with tomatoes during the summer – and tips for how to fix them.

It makes perfect sense to make cars easier to see, night and day

In a bid to highlight the clean air advantage of the Toyota Mirai, a hydrogen fuel cell electric car, the company is putting up pollution-scrubbing billboards.

And why 'ethical' grocery shopping isn't going to save the world.

The Consumer Product Safety Improvement Act (CPSIA), as passed by the US Congress in August, 2008, inadvertently threatens to take many handmade toys and children's clothing items off the market. According to the

Stickers can be fun, but how eco-friendly is this new craze for decorating walls? We have found two brands that claim their vinyls to be eco-chic, and some even come with decorative eco-reminders; very clever! Hu2 in the UK has just

Should the stuff be kept away from kids? The American Public Health Association thinks so.

In which Steven shows once again how far ahead of the pack he was.

Steven M. Johnson's great idea for ultralight camping combines your dinnerware with your goggles.

This gives the "spin cycle" a whole new meaning.

This long, deep house has a wonderful low tech vertical garden that anyone could maintain.

Referencing traditional terraced agriculture, this modern house with terraces has an integrated rainwater collection and irrigation system that would allow it to grow greenery.

Built with a lighter impact in mind, this small mountain retreat is nestled among the trees in Vietnam.

Cities and towns with good public-transit options offer more convenience for residents and are, of course, more environmentally friendly places to live. Now it

It's like that 1965 movie Crack in the World, where drilling for geothermal energy causes all kinds of problems. There are such high hopes for real geothermal power; there is a lot of heat down there that can vaporize water and run turbines.

When huge volcanoes erupt, sending ash miles into the atmosphere and shutting down air travel for entire continents, the world can't help but take notice. Yet everyday, around the planet, smaller displays of geothermal force take place. Sometimes, it's f

When huge volcanoes erupt, sending ash miles into the atmosphere and shutting down air travel for entire continents, the world can't help but take notice.

Cities can be hot-spots of pollution, with thousands or millions of people, cars, pets, industries, and more contributing to global warming. But they can also be centers of innovation, as bright ideas, available funding, and