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

Oprah Radio host Nate Berkus talks with furniture designer and manufacturer Robert Craymer about eco-friendly design.

Think long lines and crushing crowds are just part of the experience when visiting the world's greatest cultural attractions? Travel expert Peter Greenberg says they don't have to be.

Elizabeth Rogers helps explain terms used on eco-friendly labels.

We found safer, eco-friendly alternatives to conventional cleaners and asked some dirt-averse O staffers to put them to the test.