A new type of geothermal heat pump system being tested in Philadelphia can tap into a city's sewage lines to capture heat.

A recently opened power plant in the Nevada desert uses two types of renewable energy.

Plus... Shell announces first carbon capture project in the Alberta Tar Sands; Arctic oil and natural gas's high cost to limit their global share.

Geothermal power has a promising future, but so far it has lagged behind most of its other renewable energy cousins, especially wind and solar.

This integrative technology keeps CO2 out of the atmosphere and makes geothermal energy widely available

Geothermal energy constantly gets overshadowed by other sources of clean energy, like wind and solar, because it's still more expensive. But with every passing year, it gets closer to its time in the spotlight.

This new design might be the nail in the coffin of geothermal heat pump systems.

Can panda poo prevent cancer? We also have sad rhino news, fish lawnmowers, and more.

These flowery sculptures seem to grow and flourish, out of repurposed dead animal skulls.

The embrace of negative space is celebrated in everything from home décor and flower arranging to poetry and all aspects of Japanese daily life.

Deep overhang controls light, provides privacy for bedrooms upstairs.

Residents and businesses alike are joining the Lonely Whale Foundation to help stem ocean pollution by giving up plastic straws for the month.

Passive House multifamily buildings use almost no energy and don't cost much more than conventional buildings. They should be everywhere.

A tiny apartment in a new tourist hotspot is remade with clever modern elements to maximize space.

A roaming freelance photographer and writer go on the road in this self-built live-work space on wheels.

High-end materials meets smart home automation in this country-styled tiny home.

The themes of this stunning little house are copper, lots of natural light, and participation within an intentional tiny co-housing community.

This super-insulated home is built to be earthquake-resistant too.

Equipped with two bedrooms and a secondary loft, there's plenty of space to grow in this small home.

No more elephant or lion acts. Those are now a thing of the past.

It's a multifunctional space that hides everything behind its pared-down walls.

This modern prefab from Italy is conceived with energy efficiency and ease of assembly in mind.

Whether it's deciding where to buy clothes or taking good care of garments at home, there are many things that consumers can do to make a difference in the fashion world.

The project will also include molten salt energy storage for 24 hour solar power.

It is both a parody of the real estate business and a shocking exposé of Hong Kong Housing

No high-tech bells and whistles here, but tried-and-true strategies are used in this renovation to make a small space feel much bigger.

Different zones are delineated with simple, sculptural structures in this minimalist apartment.

When it comes to the Galapagos, most people think: Islands; tropical; Equator; volcanoes; some variation on those general ideas probably pops to mind, unless you've been here. If you have been here, you probably know that a

Using some inventive interventions, an old parking garage is transformed into a two-bedroom apartment in Paris.

It's really all you need in this era of notebook computers.

Last week when the US Geothermal Energy Association released it's biannual report which stated that geothermal power had grown by 20% so far this year , it cemented what TreeHugger said over a year ago: Geothermal power is the poor

Furthering a trend: As the United States continues virtually deadlocked on enacting any legislation pricing carbon or significantly promoting renewable energy, more Asian countries than China are likely to

The art form of papercuts is taken to another level with these intricate works that draw attention to some of the world's threatened species.

Authorities in Ohio are warning residents to remain inside their houses after dozens of exotic animals had apparently broken free of an area wildlife farm and taken to the streets and highways. Police haven't said exactly

For more than twelve tense hours, heavily armed police officers near Zanesville, Ohio scoured the region for big cats, bears, and other exotic animals set loose from a local wildlife farm -- ultimately killing nearly 50 of the 56

Residents of Muskingum County in Ohio got quite a shock this week after dozens of exotic animals broke free from an area wildlife farm and took to the streets and highways.

The new find may change anthropologist's conception of early Peruvian prehistory.

Hundreds of dolphins and pelicans have been found dead on beaches in Peru since February, prompting the government to issue a public health warning.

Need help paying attention? Cue up the cute baby animals.

With news that Southwest is allowing mini horses on flights, here's what to know about these petite equine wonders.

It feels much bigger than it actually is, and does not feel weird at all.

Sure, we'll be using oil for a while. But where, exactly, is demand growth going to come from?

Walking and other gentle movements could power the next generation of devices.

Thousands of abandoned flipflops turn up on African shores--Ocean Sole recycles them into something good.

It's the first plant plant of its kind in the states that generates electricity from the temperature differences in the ocean.

Scientists argue over whether some animals have the brains for suffering.

The blue whale, is the largest animal ever known to have lived on the planet. Here’s what you need to know about the majestic marine mammal.

The recovery of these beleaguered species proves that conservation action works.

The Jenni solar charger and battery pack aims to make it easy to begin going solar at home, starting with your portable electronics

Sunslice is a small folding solar charger that can fit into a pocket, while still producing enough electricity to compete with much larger offerings.