A look at ecosystems, with CNBC's Melissa Francis

A look at a 1500 foot well for an apartment in New York City, with CNBC's Bertha Coombs

Constructing the first personal use wind turbine, with CNBC's Hampton Pearson

Inside a solar cell factory, with CNBC's Julia Boorstin

Kraft Foods retrofits plants to turn waste into energy, with CNBC's Margaret Brennan.

Trash trucks that save fuel costs by running on natural gas, with CNBC's Jane Wells

Creating energy by using wood to power up to 30,000 households, with CNBC's Adam Bakhtiar

Enterprise Rent-a-Car expands its car sharing program, with CNBC's Melissa Lee

Growing and raising food locally and cutting back on shipping fuel, with CNBC's Margaret Brennan

Taking a hydrogen fuel cell car for a ride, with CNBC's Hampton Pearson

A solar factory producing solar modules, with CNBC's Julia Boorstin

Corn-growers' newest market, with with CNBC's Julia Boorstin

The real cost of bottled water, with CNBC's Margaret Brennan

A look at e-coal, coal without the pollution that costs less, with CNBC's Melissa Francis

There's a growing market to capture waste heat, with CNBC's Matt Nesto.

A look at Ausra Energy's use of solar thermal panels to conserve energy, with CNBC's Mary Thompson

A visit to the world's first biomass plant that runs entirely on recycled wood, located in the UK, with CNBC's Adam Bakhtiar.

A look at a homemade wind-powered energy source that can help you cut your energy bills, with CNBC's Emily Chan.

CNBC's Hampton Pearson looks at biofuels that use soy or vegetable oil for home heating.

Innovation Fuels adds retrofit to the green mantra, with CNBC's Melissa Lee.

Saving energy by using rooftop turbines, with CNBC's Jane Wells

Energy storage in a environmentally-safe battery, with CNBC's Scott Cohn

Retailers install solar panels for energy efficiency, with CNBC's Matt Nesto

A look at the Chevy Volt which promises to save buyers money on fuel, with CNBC's Phil Lebeau

Roofs with solar panels save energy, with CNBC's Rebecca Jarvis

SoHo goes green, with CNBC's Courtney Reagan.

The next revolution in energy storage for electric cars, with CNBC's Scott Cohn

A three-wheeled taxi powered by solar cells, with CNBC's Hampton Pearson

A three-wheeled taxi powered by solar cells, with CNBC's Hampton Pearson

Creating energy with roof top solar systems for a U.S. auto manufacturer in Spain, with CNBC's Margaret Brennan

Carbon neutral, biodegradable, non-toxic green oil, with CNBC's Bertha Coombs

Nissan's "eco pedal" helps cars become more fuel efficient, with CNBC's Melissa Lee

The latest in LED lighting to conserve energy, with CNBC's Julia Boorstin

A look at how hotels in Jackson Hole, WY is conserving energy and water, with CNBC's Steve Liesman

Algae can be converted to biodiesel, but the process is not easy, reports CNBC's Scot Cohn, Doug Henston, Solix Biofuels CEO.

Rock Port, Missouri, is the first U.S. city to meet all of its energy through wind power, with CNBC's Trish Regan.

Taking energy from the sun to power a house, with CNBC's Scott Cohn

Stocking up on firewood for winter to save money, with CNBC's Rebecca Jarvis

CNBC's Julia Boorstin takes a look at wind power in Arizona and the Spanish company that's footing the bill.

Synthetic fuels for autos and airlines may arrive sooner than people think, with CNBC's Melissa Lee.