What happens to old hotel soap? One young social entrepreneur created a humanitarian and environmental nonprofit that saves, sanitizes and supplies recycled hotel soap for the developing world.

Nothing exotic here, but it's all practical, versatile, and nutritious.

From preserved lemons and scrap scarves to flavored salts and bath melts, these handmade gifts can be made en masse for everyone on your list.

Stand around a fire and sip mulled wine. Skip the last-minute shopping. Give time, not stuff.

They show that the struggle is real, and you're not alone.

'How inappropriate to call this planet Earth when it is quite clearly Ocean.' –Arthur C. Clarke

Meet the primate species that are among the most endangered on the planet, and the most in need of conservation measures.

With more than 22,000 acres newly opened up to the iconic mammal, the release of bison onto new turf is a profound thing to see.

New research finds that on just two remote islands alone, nearly 600,000 crabs are killed every year by plastic debris.

It's time for swift and immediate action to protect marine life from further devastation.

Mixing conservation with death care, a new start-up offers permanently protected memorial trees that solve a slew of problems.

These spiny little animals are in desperate need of population control, and our sushi habits could help.

The UK government has approved a new scheme for desalination of water from the Thames, for use in London. The £200 million plant will be built in Beckton, east London. It's not a popular plan, though, among environmental campaigners. We've written before

An ambitious scheme to build a number of solar power stations along the Mediterranean shores of the Middle East and northern Africa could generate enough electricity to supply one sixth of the European Union's needs. The generators, individually fitted

We´ve noted in the past plans for new desalination plants in Australia and low-grade energy desalination technology from New Mexico.

With over a third of the world's cranes hard at work building artificial islands, an underwater hotel, and the world's tallest building, biggest mall and most expensive airport, the United Arab Emirates has now turned it attention to building the

Record droughts, falling water tables and the rapid depletion of aquifers have helped make desalination, a process once considered impractical and too expensive, a viable technology -- at least in some places. As such, there has been a rash of stories --

Dean Kamen is the kind of inventor we don't imagine exists anymore—a fervent polymath like Thomas Edison. Best known as the creator of the Segway, Kamen is also responsible for major breakthroughs in clean energy, water purification, prosthetics,

With his planes, helicopters, and other fuel-hungry pets, Dean Kamen admits that he takes a lot out of the world. This just means that, in keeping with his immigrant grandfather's advice, he has to put more back in. In the second part of our

Directed by David Valero for the Spanish eco-short-films festival La Luciernaga fundida, this video shows how a grandmother and grandson desalinate seawater at home.

Here's a frequent question asked by people wanting to create positive sustainable changes in the world: Is it more effective to work as a change agent from inside the current system or is it better to

All over the world, inspired, creative, (and often obsessed) entrepreneurs are tightening bolts and swirling beakers, inventing the next generation of green technology. Andrew Heintzman is a venture capitalist with the aim of finding and funding these

This simple, innovative solar still purifies water without electricity or filters.

A new water treatment system could save billions of gallons of water each year by recovering almost all of the waste water at bottling plants and water treatment facilities.

The UAE's clean tech giant plans to have a commerical-scale plant by 2020.

This novel wave energy technology can deliver large volumes of high pressure water ashore for desalination or power production (or both).

This system could produce 3,500 gallons of clean water per day, at half the cost of current desalination methods, using just the motion of the waves to power the Reverse Osmosis process.

The latest episode of Fully Charged appears to come to us from the future. Or, maybe just Australia...

When an Iowa State professor of mechanical engineering followed his hunch about spider webs, it paid off: he proved biological materials can rival metals in conducting heat.

As the mercury rises, staying cool becomes a real challenge. Try making this gorgeous desk fan to keep your energy costs down.

A unique solar panel has been designed at Stanford that cools buildings by reflecting sunlight and radiating thermal energy out into space.

Using an age-old method to cool the air, this terracotta "cold pot" could be an energy-efficient and low-maintenance alternative to conventional air conditioners.

It lets them be creative with their cooking and the kind of spaces they set up in.

The technology uses radiative sky cooling to help cool buildings without electricity.

The dual source heat pump uses either the ground or the air as a heat source.

An event on Lake Tahoe promises "world class minds, radical innovation and kickass rock 'n roll". And solutions to the biodiversity crisis, too.

The secret to a diet that makes the microbes in your gut healthy, for fighting obesity and disease

Whether for parental sanity or oceanic health, this is a powerful step toward a much better world.

Britain's Conservative government is expected to announce wide-ranging measures to tackle ocean plastic pollution.

The veteran naturalist and broadcaster is not holding back (this time).

Plastic pollution doesn't just kill fish. It kills people too.

You are not alone. Even when you are...

The anti-straw movement is definitely having a moment. Let's hope the momentum continues.

With a $1 million donation, Andrew and Jane Cliffordhope will double the size of the world's largest cat-free sanctuary.

Until now, no species has had such a profound effect on shaping the Earth's biosphere as the humble broiler chicken.

The largest grocery chain in the US will develop and implement a new plan to improve its protection of tropical forests.

Entice butterflies to stay, eat, mate and lay eggs in your garden with these plants and tips.

Over the last 30 years, habitat loss for imperiled species in the U.S. was more than twice as great on non-protected private lands than on federally protected public lands.

Sometimes shipping container architecture makes perfect sense.

You have heard of "fast fashion." Get ready for fast architecture in container-sized modules.