Gayle talks with actress Rosario Dawson at V to the Tenth, an event marking the 10-year anniversary of V-Day, a global movement to raise awareness and funding to end violence against women across the globe. In addition to her commitment to women's causes, Rosario talks with Gayle about her passion for promoting environmental awareness and shares tips for living a greener life.

Growing up with limited means, Rosario says she learned a lot about how to make the most of what you have. Rosario says her grandmother's and mother's resourcefulness was not only important for the family financially—it also turned out to be good for the environment. "You're on a tighter budget, so it makes you have to make things last longer," she says.

Rosario shares some simple tips for helping the environment:

• Put a brick in your toilet tank. The brick displaces some of the water so you use less each time you flush, Rosario says.
• Don't flush old pharmaceuticals down the drain. "That's really causing a lot of pollution in our water," she says.
• Switch to compact fluorescent lightbulbs. Rosario says you'll save money and energy.
• Hang-dry clothes more often. Clothes dryers use a lot more energy than people might think, she says.
• Use your grill and cook outside once in a while to save energy.
• Don't run the water when you wash your dishes or brush your teeth.