MUMBAI: Julia Roberts won an Oscar in 2001 for her portrayal of a crusading activist. Now that her third child is due this summer and the twins Hazel and Finn are about to turn two and a half months old, she is taking her Erin Brockovich role to heart when it comes to saving the environment.

“It sounds corny, but it’s true: It’s our absolute responsibility to take care of our children so that we don’t just throw up our hands and say, ‘Wow, we pretty much f—ed this up. Good luck to ya in 50 years.’ Because we did create the problem little by little and that’s the way we’re gonna have to fix it, little by little, the best we can,” Roberts told www.Hollywood.tv founder Sheeraz Hasan Founder.

Her crusade now is to promote biodiesel fuel, especially for school buses. “I just feel that any parent who’s informed cannot put their kid on a school bus without saying to their school district or their congressman, ‘Hey, man, you gotta clean this up for us!’ Because it’s too easy not to fix,” she said.

To drive her message home, she recently appeared on The Oprah Winfrey Show. “I’ve been in this business for 20 years, so I understand for better or for worse the media frenzy and the power of celebrity. And until you say something of true value on Oprah, you don’t really realize how many people watch her.”

It’s the small things we do that can have a big impact on the environment, Roberts believes. “Every time I go to the grocery store carrying my grocery sacks back from the time before, I feel happy,” she says. “All the tiny things, I think, really do make a difference.”