Some question if it is even possible.

Or are they just fooling themselves and being selfish?

The origins of Joseph Pilates' regimented workout program began when he was sequestered in an internment camp in England during WWI.

Yes, but not necessarily in the way you think.

The carbon footprint of concrete can be a whole lot better, if you make it out of carbon dioxide.

A Chinese study says concrete actually sucks up CO2. This is not news, it's chemistry.

New research sheds new light on why Roman concrete is so strong and water resistant, but let's not get carried away here.

So much for my New Year's resolution to stop writing about concrete planters in the sky.

A key industry association is working to keep warming to "well below" two degrees.

Created by Zaha Hadid Architects, this innovative project demonstrates the possibilities of using KnitCrete technology for creating curved concrete shells efficiently.

Concrete Week at the Guardian produces some hard truths.

Did we say we hate concrete? Just the new stuff. This kind of concrete should be buffed, polished and treasured.

We do a little destructive testing and have a good breakfast.

Access to reliably electricity is what defines civilization in the 21st century, but in many parts of the world, and for a shockingly large number of people, even basic access to electricity is rare, unstable, or nonexistent. This has to change.

It is as counterintuitive as it is true: Around the world, communities who have resided on the land the longest often have the most tenuous rights to that land.

There's plenty of "recognizing," "acknowledging," and "noting" going on in the final draft of the Rio+20 text. Lot's of UN-ese. And that's about it.

Using ceramics and metal nanoparticles, a non-profit organization from University of Virginia is making these simple but effective purifiers that can eliminate up to 99.9% of waterborne pathogens.

Good for the Westons, owners of both, for doing the right thing by admitting their use of the factory and their willingness to help out.

Groups working in developing regions could use solar-powered 3D printers to make tools, lab supplies and more on the go.

Discarded laptop batteries could power LED lights in regions with scarce electricity.

The toilets could be used to power lighting in refugee camps.

The device made from household objects could replace AA batteries for powering small electronics.

The technology could save countless lives.

The batteries could provide back-up power for small solar power systems.

The Level Market wants to make the procurement of humanitarian aid and development products as easy as shopping on Amazon.

For the last two decades, Nargis Latif and her organization have been researching how to divert waste from landfills and reusing it as quick and cheap construction materials.

How do companies close the “green-gap” and turn consumer values into action?

A major brand is putting out the first fully recyclable shampoo bottle made from recycled beach plastic

How many of these common items have you placed in your blue bin?

Here are some tips that’ll help parents and children connect with nature and honor the environment.

When the heck did electric commercial flight become a realistic prospect?!

On the heels of their success pushing sales of electric cars, Norway want to spur the move to electric airplanes

CEO John Holland-Kaye expects to be taken up on this offer within the next 12 years.

A number of companies are flying SST Trial balloons, but we should all pop them now.

“December 10, 2019 will be remembered as the day the electric aviation age started.”

These delicate works of art are made out of current and vintage newspaper broadsheets, and prompt us to look beyond the daily news cycle.

Photographed in various natural settings, these life-sized, child-like works of art invoke a sense of wonder and delight.

These fascinating works explore how folding might push the frontiers of flexible photovoltaics, self-assembling materials and nano-forms.

Using a series of rotating LED lights, this work highlights the visually transformative powers of the Moon.

Using various vintage fabrics, many with a story behind them, this artist portrays ordinary people and historical figures with an artful eye.

Gorgeous, soft and looking like a living UFO, this enormous work of textile art is brightening up one Paris institution.

We have standing room in landbuses, so why not airbuses?

Greener aviation is about to get a boost.

I'm a fan of any policy that discourages people from schlepping loads of unnecessary stuff around the planet.

Sure, it'll only have nine seats. But the low cost carrier expects larger electric planes in service by 2027.

Yes, but first we need to develop a collective conscience when it comes to travel.

Do we have the political will to do what has to be done? Simon Kuper doesn't think so. I do.

A secret deal lets the homebuilders dominate the committees that write the building codes for housing.

"Give the future, not presents."

It's about time more cities did this.