President Obama's official rejection of the Keystone XL pipeline on Friday was met with grand applause from those who opposed the project and organizers who worked tirelessly, despite long odds, to force the adminstration's hand.

We often hear about the toxic brew of chemicals lurking in everyday items such as makeup, shampoo and nail polish, so how do we which products won’t do us any harm?

Agriculture expansion is the leading driver of natural habitat loss worldwide. However, most of this growth is not to produce vegetables, fruits or grains to be eaten by people…

My neighbor uses Roundup in her yard routinely and tells me it’s harmless to people and pets, but I’ve heard that it is carcinogenic. Can you set the record straight?

A Michigan State University research team has finally created a truly transparent solar panel — a breakthrough that could soon usher in a world where windows, panes of glass, and even entire buildings could be used to generate solar energy.

JooSoap’s philosophy runs something along the lines of the old fishing proverb: “Give a person a bar of soap, and you keep them clean for a day. Teach them to make soap, and they’re clean for a lifetime.”

Solar desalination is a technique used to remove salt from water via a specially designed still that uses solar energy to boil seawater and capture the resulting steam, which is in turn cooled and condensed into pristine freshwater. Salt and other impurities are left behind in the still...

They should teach this in school but unfortunately just like most important life skills it is up to us to educate our children and each other so make sure you share this.

On July 12, 2011, the Center for Biological Diversity struck a historic legal settlement with the U.S. Fish and Wildlife Service, requiring the agency to make initial or final decisions on whether to add hundreds of imperiled plants and animals to the endangered species list by 2018.

Aspen is one of three U.S. cities to run on 100 percent renewable energy as of today, according to city officials. The Colorado mountain town is best known for its posh ski resorts, but this beautiful town also has established itself as a leader in environmental stewardship.

I learned about George Price, a University of Montana professor of African American and Native American Studies, when I got to Missoula on August 21, as I was beginning my Edge of Change roadtrip, and began asking around about the megaload protests.

Bottle Bricks are a simple and accessible technology that can transform everyday plastic materials into a useful building material – plastic bottles stuffed full of trash until they are as compact as bricks.

A much-anticipated book in conservation and natural science circles is EO Wilson’s Half-Earth: Our Planet’s Fight for Life, which is due early next year. It builds on his proposal to set aside half the Earth for the preservation of biodiversity.

How have polar bear populations in the Arctic been faring since the U.S. put them on its endangered species list in 2008, and what efforts are underway to protect them?

I see with a poet’s eye toward beauty. The tiniest discoveries delight me. The sleek vole who scurried beneath my pot of portulaca. The grasshopper, pretending to be a peony leaf. The mourning dove feathers I’ve been so tenderly collecting, and now I’ve met the birds, sitting sweetly in my garden.

Keeping a tidy home isn’t just nicer to look at it – it’s better for our health. However, no one likes to spend their weekends cleaning up. It’s better to keep your home clean as you go. Here are some habits of people who have all-around clean homes.

A study published last year suggested that hydraulic fracturing and proximity to active well drilling are associated with congenital heart disease and low birth weight newborns.

In a land where men are more valued than women, this unique village celebrates its daughters while creating a greener, healthier world.

From background radiation to chemicals in the food chain, environmental changes are contributing to a rapid global rise in neurological disease.

The planet Earth, with mankind's help, is leap-frogging into sweltering new territory.

Palm oil — which appears in a dizzying amount of food and cosmetic products, and is a feedstock for biofuel — poses many environmental problems.

Obama has protected more than 260 million acres of public lands and waters; more than any other president.