Scientists have developed a piezoelectric speaker that can playback the full frequency range of dolphin sounds, getting us closer to human-dolphin communication.

By 2050 wave and tidal power could supply 11% of current UK electricity demand.

Wave power is a promising source of clean energy, but it is usually overlooked because wind and solar power are farther along.

Sand castles are so yesterday, large-scale sand art is the thing to try.

The wave glider created by Iquid Robotics has passed quite a test for robustness. It coasted through the superstorm and provided real time weather data nonstop.

A student at Wake Forest University is testing wave energy technology for capturing the power in pool laps.

Sad Anniversary digg_url = 'http://www.treehugger.com/files/2009/12/one-year-later-tva-toxic-coal-ash-spill-tennessee.php';A year ago, a massive coal ash spill took place in Tennessee. About 5.4 million cubic yards of ash ended up in a river and

Late last month, when officer Shelley Hammonds of the Tennessee Wildlife Resources Agency received word of an animal in distress, it might have sounded like a routine rescue operation. Witnesses described

Woops.

Simple but striking, this small treehouse retreat was built by hand and furnished with repurposed flea market finds.

A fisherman who had criticized illegal fishing practices loses an eye in an armed attack as diminishing fish stocks and increased debts create a volatile atmosphere.

Solar-powered buoy design seeks to reduce costs for fishermen and the risk of kerosene spills on Lake Victoria.

Nature and the environment are still a big part of this protest.

All of which could be summed up in one statement: Turkish food is fantastic.

Why are we eating cardboard-like cereal and bland yogurt when we could be having a sensational meal?

We all can't go to Copenhagen this week, but there are so many ways to make our voice heard nonetheless. ThisPlace09 is an art and Twitter project that conveys personal thoughts about climate change to the delegates and the

Happy New Year! This week marks Carnival of the Green #208, and the first Carnival of 2010. Congratuations to all who have submitted entries and hosted over the years to make it such a success!

Today there was new space added to the Twitter HQ, doubling their size. Designed by the lovely and talented Sara Morishige Williams (@sara), the newest spaces are consistent with the philosophy of the existing offices

A "moot court" will be held over Twitter for the first time ever, and students from 5 major Canadian law schools will argue an environmental law.

Citizen persistence at measuring and publicizing pollution levels results in a major turnaround by Beijing.

This year's nominees include amazing concept gadgets, biomimicry in robotics, crowd-sourced projects and more. Vote for your favorites here.

Come one, come all, witness The Twittertape Machine that prints a feed of your tweets and mentions on Twitter.

More bikers take to Twitter to mock bike haters.

There are a number of reasons why this is an excellent idea.

Photo by Paolo Torchio Veteran wildlife photographer Paolo Torchio made a bizarre discovery while visiting Kenya's Masai Mara National Reserve: a mysterious "bearded" antelope. While one expert suggests the animal might only be suffering from

It's a TreeHugger's dream come true. Leafsnap is a new free app that identifies trees.

An isolated winter scene beats out the competition in the annual awards ceremony.

See fish in black and white, bones and flesh, in Smithsonian exhibit, touring the U.S.

The billion-dollar app specializes in sharing digital photos, but tugging along behind it is a growing pile of material stuff.

Is there somewhere you go to when you need to recharge your batteries? Or remind yourself of the beauty of nature? These are our favorite nature spots.

Is there somewhere you go to when you need to recharge your batteries? Or remind yourself of the beauty of nature? This is the second part of this series.

When John Doerr talks, people listen. As one of Silicon Valley's most prolific venture capitalists, having earned upwards of $1 billion betting on tech heavyweights like Amazon, Compaq and Google, investors and businessmen paid close attention when he

Innovation may be a fundamental part of

TreeHugger Founder Graham Hill stopped by the TED Conference recently to outline his LifeEdited project—and explain why a keen ability to edit will be the most important skill of the next century.

" It is an idea upon which our planet’s future depends."

Tiny homes aren't just about owning a home debt-free, it's also about more intangible, but equally important things, says tiny home builder Andrew Morrison.

Believe it or not, these folded works of wonder are created from a single sheet of paper -- no cuts, no glue.

The new City Bike program will also feature a 'bring your own battery' scheme, leaving the charging to the rider.

The new vision promotes active transportation like walking and biking.

For some reason, they think that this is progress.

The Uniti electric city car will come bundled with a green charging incentive for buyers in Sweden.

36 artists from 17 different countries have created 15 totally unique art suites out of ice

Ingvar Kamprad changed the industry, making good design affordable, accessible and desirable.

New research suggests that mother bears have found a loophole in hunting laws and are using it to protect themselves and their cubs.

Naturally, official Nordic eating guidelines include things like: "Eat more food from wild landscapes."

High-tech hydroponic containers allow for soil-less cultivation and a carefully controlled yield.

Art meets accidental crowd-sourced recycling.

Why Mattel's diabolical darling could be a threat to children’s privacy, wellbeing, and creativity.

Because every preschooler needs insecurity-boosting, sexualizing, toxic cosmetics to slather on their beautiful little faces!

It costs very little, distracts kids for longer, and minimizes clutter around the house. In other words, it's every parent's dream come true.