There lots of ways to honor the planet on April 22, as we found out when we asked a few celebrities about their Earth Day plans. We caught up with Mayim Bialik and Carla Hall at the Los Angeles Times Festival of Books and Izabella Miko and Andy Richter, with his son William, at the GBK Luxury Gift Lounge for the MTV Awards.

Mayim Bialik as Amy on The Big Bang Theory“Being vegan, it’s sort of a tribute to the planet that we make all the time,” says “Big Bang Theory” star Mayim Bialik. The author of the book “Mayim’s Vegan Table,” says that for her family, living green also means not using paper towels or commercial cleaning products at home. The mother of two doesn’t have specific Earth Day plans yet, “But we’ll probably do something outdoors.”

Carla Hall on the set of “For Earth Day I try to be conscious, conscious of how much electricity I’m using, and share that consciousness,” says “The Chew” co-host and “Carla’s Comfort Foods” author Carla Hall, who has attended the Earth Day Festival in Washington, D.C., her hometown, in the past.

Izabella Miko“I’ll probably have people over and cook vegan food. I do that all the time,” says actress Izabella Miko, whose dance movie “Make Your Move” hits theaters on April 18. The anorexia-themed telefilm “Starving in Suburbia” premieres on Lifetime April 26, and Miko will also star in “Step Up 5” in July. Miko, who has a green blog and sells sustainable coconut butter wax candles at, says her next move is planting a garden on her roof. “I already grow my own vegetables but doing it on my roof will also insulate.”

Andy Richter and his son, William“We just moved into a house in Burbank and we’re redoing the garden,” says “Conan” sidekick Andy Richter (at right with his son, William). “We’ve realized grass is an extravagance so we’re planting succulents, things like that,” he says. Richter will reprise his role as tiny lemur Mort next year in the latest movie in the animated  “Madagascar” series, “The Penguins of Madagascar.”

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