Oprah Radio host Dr. Mehmet Oz talks with journalist Bill Kurtis about taking on the challenge of raising environmentally friendly beef.

It's been over a year since eco-expert Simran Sethi purchased her historic home in the heart of Kansas. Did her foray into creating a environmentally friendly and energy-efficient home work out for the green girl?

Aboard the Plastiki, TreeHugger.com founder Graham Hill shares the easy ways you can use technology to pick eco-friendly seafood for dinner.

Environmentalist Elizabeth Rogers provides definitions of the most common green-related terms.

On the 40th anniversary of Earth Day, journalist Simran Sethi reflects on what it really means to be an environmentalist.