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.

Omar Sherzad's single-room art studio doubles as a second home for his family of four. Who wouldn't want a night at the museum?

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

This small-but-dynamic, renovated apartment in Barcelona takes its design cues from boat design and hides some delightful surprises.

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.

The Internet is a surprisingly powerful tool for shopping locally.

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.

Citing financial difficulties due to coronavirus, many companies are failing to pay for orders that they placed months ago.

Use what you already own to create a space that feels fresh and new.

It may feel like the whole world is regressing toward single-use plastics, but the waste-free movement is far from dead.

Making do with limited ingredients has taken on new urgency in pandemic times.

Books and dirt feature prominently in this family's life right now.

Only it can provide the rejuvenation and entertainment that cannot be found elsewhere.

This is our chance to commit to new ways of moving around the planet.

"Be like a squirrel" and other advice for unexpectedly difficult times.

It's a form of travel that is socially distant, cheap, and well-ventilated.

The country's ambitious reforestation project has received a surprise influx of laborers, thanks to coronavirus.

They tell us, "You are not alone. Others have been here before." That's exactly what we need these days.

The gains are even bigger when beef is targeted specifically.

Gone are the oppressive schedules, replaced with long stretches of glorious free time.

Hint: Forget the microwave. It's overrated.

In times of comfort snacking, there are plenty of fulfilling options that are actually good for you.

Here is is the 2020 ranking of pesticide residue on produce.

When it comes to housecleaning, here's how to tackle the virus responsible for the COVID-19 pandemic.

A new study finds that it is unlikely that infected patients are shedding the virus through their tears.