If after all of the composting talk this week, you still aren't entirely convinced yet that it's the activity for you, consider that all the cool kids (and their parents) in Hollywood are doing it. Take Blythe Danner for example: she's been appearing on television and in movies since dinosaurs roamed the earth the late 1960s, however she's probably best known for her role as Gwyneth Paltrow's real-life mom. Recently Danner spoke on the importance of teaching her grandchildren Apple and Moses - Gwyneth's kids with musician-husband Chris Martin of Coldplay fame - the importance of composting.

Apple and Moses "compost with me," Danner says. "It's a nice thing we like to do together out in our garden. They are great helpers."

"Apple said to me the other day in the car, 'You know we have to keep the world clean.' and I said, 'Yes! That's my girl!' She is getting the message."

Danner, who recently appeared at New York's Union Square to help launch some new energy-efficient gas garbage trucks, says this concern for the earth dates back much further than the grandkids, and that Gwyneth was already well-educated on the subject by the time she was a toddler.

"Gwyneth was actually 3 years old when she had a placard that we made, this homemade sign that said 'You are Polluting.' And we would ride around Los Angeles where we lived," Danner adds. "I said, 'Gwennie, when you see dirty, black spewing out of a bus or a truck, hold up a sign.' "

After delivering the instructions, the mom-and-daughter team had a scary moment – when the young Gwyneth proceeded to roll down her window at a stop light. "Before I could stop her, she was saying to this big guy in this huge truck, 'You're polluting!'

He said, 'I am? I better go to the big garage and fix that.'"

» People