This post is by Miriam Horn, a writer at Environmental Defense Fund and co-author of the New York Times bestseller, Earth: The Sequel. It's part of a video series on new energy technologies, Unleash the Future.

1. Introduction (YouTube)
2. Solar
3. Biofuels
4. Geothermal
5. Wave

While solar, wind and wave energy all originate with the Sun, the heat locked up in the Earth itself offers another huge potential energy resource. Historically, that "geothermal" power could be converted into electricity only in those rare locations where natural fissures allowed water to flow into deep hot rock and come to the surface at temperatures high enough to generate steam. Now an innovator in Alaska has developed the first low-temperature geothermal power plant, which United Technologies is commercializing for worldwide sale.

Take a look at my short video on geothermal power to learn more.

If you have any questions or comments on geothermal energy, please post them here. I'll do my best to answer.

This post is by Miriam Horn, a writer at Environmental Defense Fund and co-author of the New York Times bestseller, Earth: The Sequel. It's part of a video series on new energy technologies, Unleash the Future.

1. Introduction (YouTube)
2. Solar
3. Biofuels
4. Geothermal
5. Wave

"Anything you can get out of a barrel of oil, you can get out of a pound of sugar with the right microbe." So says Jack Newman of Amyris Biotechnologies, who is using genetically-modified yeast to brew gasoline.

Take a look at my short video on biofuels to learn more.

If you have any questions or comments on biofuels, please post them here. I'll do my best to answer.

This post is by Miriam Horn, a writer at Environmental Defense Fund and co-author of the New York Times bestseller, Earth: The Sequel. It's part of a video series on new energy technologies, Unleash the Future.

1. Introduction (YouTube)
2. Solar
3. Biofuels
4. Geothermal
5. Wave

Harnessing solar energy can be pricey, but that soon may change. One company aims to cut the price by a factor of 10 by printing cheap solar ink onto flexible film that could serve as your roofing material.

Take a look at my short video on new solar technologies to learn more.

If you have any questions or comments on solar power, please post them here. I'll do my best to answer.

This post is by Tony Kreindler, media director for the National Climate Campaign at Environmental Defense Fund.

The main reason to pass climate legislation as soon as possible is that the fate of the world is at stake. We're in a race against time to stop global warming, or face irreversible climate catastrophe.

But there's also another race - the race to develop the clean energy technologies that will power our future. The world is at the dawn of a technological revolution, and we need the economic incentive of climate legislation to fully participate.

Read more »

This post is by Sheryl Canter, an online writer and editorial manager at Environmental Defense Fund.

Environmental Defense Fund President Fred Krupp has a compelling Op-Ed piece in today's Wall Street Journal. He says that, "Solving global warming will be an added cost, yes - but a bargain compared with the economic cost of unchecked climate change." The winners of the race to reinvent energy stand to make megafortunes. Here's some of what's in the works:

Read more »

This post is by Sheryl Canter, an Online Writer and Editorial Manager at Environmental Defense Fund.

Last week I wrote about the TreeHugger interview with EDF President Fred Krupp and Miriam Horn about their new book. Earth: The Sequel is an engaging look at emerging technology in the fight to stop global warming.

Fred has been getting around quite a bit lately. This week he also was interviewed by Forbes, Newsweek, and Mercury News. Each had a slightly different focus. Here are some excerpts:

Read more »

This post is by Sheryl Canter, an Online Writer and Editorial Manager at the Environmental Defense Fund.

In yesterday's post, Environmental Defense Fund President Fred Krupp wrote about his new book with Miriam Horn, Earth: The Sequel.

The popular environmental blog Treehugger just published an interview with them about the book and their experiences writing it. They discuss emerging clean energy technology, and give interesting anecdotes about people they met along the way. Here are some excerpts:

Read more »

This post is by Fred Krupp, President of the Environmental Defense Fund.

Earth: The Sequel tells the story of an exciting race that is just beginning - the race to develop low-carbon energy in time to turn our greatest environmental crisis into our greatest economic opportunity.

Many people have expressed surprise that I'd write a book like this about a problem so serious. And global warming is serious. With each passing year, scientists get more and more alarmed at the increase and extent of disturbing impacts. But this book is not about the doom and gloom of global warming. In fact, it's just the opposite.

Read more »

This post is by Sheryl Canter, an Online Writer and Editorial Manager at the Environmental Defense Fund.

There's a new book coming out on Monday that explores the hopeful side of global warming. Huh? What's that?

It's called "Earth: The Sequel", written by Fred Krupp (president of EDF) and Miriam Horn, and it's all about emerging technology in the fight to stop global warming. There are trillions of dollars pouring into clean energy solutions, and people are doing such cool things.

You can learn more about the book from an informative video narrated by Fred. You also can pre-order the book from here.

The author of today's post, Sheryl Canter, is an Online Writer and Editorial Manager at Environmental Defense.

We know we need energy to power, well, everything. And we know that if we continue to get our power mainly from fossil fuels we're in big trouble. So where do we get it?

Most people have heard about solar power and wind power, but there are some other alternatives that may be new to you.

Read more »