Mark-Paul Gosselaar, Kathryn Morris and Olivia Munn give you a double dose of green. See their tips here. (Gerri Miller)

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Mark-Paul Gosselaar: Hi, I'm Mark-Paul Gosselaar.

Kathryn Morris: Hi, I'm Kathryn Morris.

Olivia Munn: I'm Olivia Munn and you're watching the Mother Nature Network.

Mark-Paul Gosselaar: Hi, I'm Mark-Paul Gosselaar from "Raising the Bar," uh, my ocean tip would be please don't dump anything down storm drains. Everything you dump down there goes stright to the ocean, we need our oceans, and it's up to you.

Mark-Paul Gosselaar: Hi, my name is Mark-Paul Gosselaar. My green tip for the day is buy a Prius. Everybody can buy a Prius, right? Or lease one. Rent one. Get a green car.

Kathryn Morris: Hi, I'm Kathryn Morris and my green tip is to actually look into getting solar power. There are so many avenues, you can pick from the phone book, you can probably see a sign in your neighborhood that says "go solar." I have the big binder sitting on my desk right now and it's just those baby steps and learning more things about the possibility of doing that.

Kathryn Morris: I'm Kathryn Morris and my green tip is definitely trade in your car for a hybrid and really look in to solar in your neighborhood if you can, and unplug everything as often as you can when you're not in that room.

Olivia Munn: Hey everyone, I'm Olivia Munn and my green tip of the day is install a water filter in your home sink, that way you don't have to use bottles anymore and people can just drink right out of the faucet. Also, um, invent a time machine, so we can go back in time before people ruined our earth. Thank you, bye.

Olivia Munn: Hey everyone, I'm Olivia Munn and my green tip of the day is don't use paper towels. Just, you know, get a regular towel and wash it. That makes sense, right?

Mark-Paul Gosselaar: Hi, I'm Mark-Paul Gosselaar.

Kathryn Morris: I'm Kathryn Morris.

Olivia Munn: Hi everyone, I'm Olivia Munn and you're watching the Mother Nature Network.

MNN homepage photo of MNN: ZUMA Press

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