It could be a lot more than you think, especially if you take the long view...

Once a rail artery feeding Manhattan's core, the High Line was eventually abandoned only to be reborn as an immaginative and inspiring public space.

Greg Lavardera throws another spanner in the works with a rant about the batts

It took four years, one million spiders, and 80 people in Madagascar to make this cape, on view at London's V&A Museum -- and the color is natural.

Fossil fuel company executives and D.C. politicians have long worked together to ensure coal and oil prices stay low enough to keep Americans hooked. Here's how we can break the addiction.

Her new book Before the Lights Go Out investigates strategies for conquering the energy crisis before it conquers us.

Every bit of technical knowhow needed to make heavy truck transport electric (and reduce carbon emissions from transportation) is already available.

Need a bicycle basket that is even handier than the classic wicker thing? The Bent Basket covers a variety of carrying needs.

You know bikes are good. City planners know bikes are good. Yet as soon as cities are successful in getting people biking, a horrible catch-22 is set in motion.

Yes, it's National Bike Month. What's even better - it's National Bike Year, and Maybe National Bike Decade. Here's Three Ways to Up Your Cycling Enjoyment

We're heading to Rio for World Environment Day. Here's a sneak peek at what's happening in Rio de Janeiro this week.

A student project transforms bicycle wheels into rolling animation -- magic ensues.

Leading a coalition of investment institutions which managed to include a paragraph on the need for sustainable reporting, Dr. Waygood says this small text can make a difference.

It usually doesn't pay to bet against Elon Musk. He's not only brilliant and he never gives up, but he's also shown great insight into technological trends.

Norwegian engineering students debut an electric motorcycle made from carbon fiber. They say it will be fast, cheap, and get 100 kilometers to a charge.

Agenda 21 crazies, poison plastic people and hey, some green buildings and furniture!

This Brazilian designer who worked with the Campana Brothers wants you to see tough objects in a different light.

Who knew that old rope could have such a dignified second life?

Seniors residence so green and attractive that the government and nonprofits should jump up and say "We built it!"

The Toyota RAV4 EV is finally coming!

This Barcelona garden is about as simple as it comes. Only it's 70 feet high.

Arum is a ring of ashes that creates a place of remembrance on a specific tree. The biodegradable ring is placed around the trunk of a tree and then left to disintegrate naturally while leaving a permanent mark.

This unique travel guide is the perfect book for the eco-conscious non-tourist. It features 111 projects you can visit around Europe, that make our cities better.

A small subterranean living space becomes a surprisingly luxurious urban dwelling.

Barcelona's bike sharing users are in an uproar; the city council wants to raise the anual fee by 116% in order to reduce the transportation budget.

Instead of designing it himself, Curro Claret gets people in risk of social exclusion to create and build Camper's shoe store in Barcelona, using reclaimed materials. The result is a fun store with a lot of personality.

In Barcelona, buying bulk is part of the city's history -- and visiting one of these historic shops is a unique olfactory experience.

Maio Studio turned an old, dark launderette into a bright new co-working space for creative professionals.

Follow the step-by-step eco-renovation of a 100-year-old Modernisme-style space into apartments in Barcelona. From upcycling to smart water-saving devices and insulating rooftop plants, yök Casa + Cultura is about sustainability and the local culture.

Can you guess which European cities have the highest percentage of walking + bicycling + public transport? Give it a shot.

Recyclability is key at yök's eco-renovation. First, preserve everything we can, then recycle everything that has to go and lastly, make sure any new stuff is recyclable in the future.

In the end it needs to work, fit the budget and be easy to install. To divide our spaces, we opted for low-VOC drywalls, locally made in Spain. That way, no floors or ceilings shall be harmed!

Copper is recyclable, but requires a lot of energy to do so. For our plumbing system, we opted for PEX, a crosslinked Polyethylene that is easy to install, non-toxic and long-lasting.

What is the best eco option- longlasting porcelain sinks, 100% recyclable, lightweight LDPE ones or second hand washbasins? Here's the story of how we chose the sinks for our non-hotel in Barcelona.

I believe we made the right decision in choosing Isonat Flex, made of wood fibres, over mineral wool or cellulose to insulate our low-VOC drywalls. Here's how we made the decision.

We are still eco-renovating! Here is what we did to our office, a top floor space in the heart of Barcelona. Insulation, energy-saving devices and non-toxic, recycled materials are key.

Home automation, LED lighting, ceiling fans, insulation, energy monitoring and other tricks will save energy without sacrificing the experience in our holiday rental apartments.

yök commissions upcycled stools by ex homess people and Curro Claret

At yök we do not only work hard to save energy, but also water. According to Airbnb, guests in Europe renting a home use 45% less water than when staying in a hotel. But there is more to a bathroom than saving water; materials also play an important role

Astral Nature has the perfect mattresses: all natural ingredients and locally made just outside Barcelona. However, at yök Casa + Cultura we also needed an eco base. Luckily, Astral made some changes to theirs. The result: green beds, such luxury!

Made from used wooden pallets and a recycled countertop, the kitchens at yök Casa + Cultura in Spain are made to last.

This is my last post about my current eco-venture in Barcelona: yök Casa + Cultura. We believe that good tourism is possible thanks to common sense, eco-design and working for People, Planet and Profit.

Once a dark, partitioned off single family abode, this newly renovated space now features two independent live/work areas that are linked together by a communal space in the middle.

These simple but intriguing urban art sculptures made out of repurposed tires bring a new sense of place to some of Barcelona's neglected streets.

These clever metal clamps can clip onto flat materials of any shape, allowing you to make your own furniture, wherever you go.

These premade apartment units are lifted on top of the city's old buildings, making use and maximizing space on Barcelona's "forgotten rooftops."

The city's iconic chamfered blocks will become superblocks the size of small towns.

A compact apartment in a traditional building near Barcelona's waterfront is transformed into an airy, modern home.

Not surprisingly, it starts with getting organized.

The island that Marco Polo once described as "the most beautiful in the world" lived up to its reputation.