Get your green tips from Amanda Seyfried and Olesya Rulin. (Gerri Miller)

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Amanda Seyfried: Hi, I'm Amanda Seyfried, and my green tip of the day is: carpooling. Carpool whenever possible because it's easier on you and the world.

Olesya Rulin: Hey guys, this is Olesya Rulin from High School Musical and Greek, and my green tip for the day is: when you go to Starbucks or wherever you go to get your coffee, bring your own mug.

MNN homepage photo: Chris Jackson/Getty Images

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