Read an excerpt from Kathy Freston's book, Veganist, in which doctors answer the most frequently asked questions about eating vegan.

New York fashion week is acknowledging eco-fashion designers like Lara Miller for the first time with a two-day event called the GreenShows Eco-Fashion Week.

O's creative director, Adam Glassman, makes it easy being green.

In his expert series on affordable, accessible superfoods, author Dave Lieberman reveals the power of tomatoes, dispels tomato myths and shares simple preparation tips for deliciously nutritious meals.

Oprah and staff talk about going vegan for one week.