CNSNews.com had asked Grenier whether he agreed with Avatar Director James Cameron, who recently spoke on Capitol Hill, that global warming is “as great as the threat” that America faced in World War II.

Grenier said, “I don’t know about climate change necessarily, but I definitely believe that man’s footprint on this planet is a huge problem -- but not just in climate change. I think also with the amount of fish that we’re consuming, pollution of the oceans, and I think climate change is just yet another problem.”

“We may starve to death, uh, or we may not be able to eat fish anymore,” said Grenier. “I just went, actually, swimming with blue fin tuna and we’re basically eating them into extinction. So, you know, I think something may get us before climate change. That’s why I’m really encouraging everybody to be more conscientious and try to figure out ways to responsibly exploit our resources and do it in a conservative manner as opposed to just haphazard and a very selfish manner.”

Grenier spoke with CNSNews.com at the Creative Coalition’s “Art and Soul” gala last week.

Grenier is the star of HBO’s Entourage and has won several awards related to his environmental activism, including the “Blue Sky Award” at the Vail Film Festival in Colorado. He also founded the “Eco” Web site SHFT.com after creating the show “Alter Eco” for the Discovery Channel’s Planet Green. SHFT’s motto is, “Curating the culture of today’s environment.”

Grenier further told CNSNews.com, “My job is to inspire people to make their own decisions and take personal responsibility. You know, it’s not enough anymore for people to just point the finger and say, ‘Well, he’s doing it, so why do I have to change?’”

“If you change, if you become more conscious about how you consume, not only are you helping the planet but you are also, in my opinion, living a much more connected, healthy, happy life,” he said. “I found it to improve my lifestyle and my quality of life by just being aware and tasting the fruit as opposed to just swallowing it.”

Grenier was also asked how he would respond to the criticism that the health care reform law does not promote individual responsibility but more of a reliance on the federal government.

“I always took it for granted that we were allowed life, liberty, and the pursuit of happiness but without life and health, how can you pursue happiness?” he said. “I think it should be something that we all get and, by the way, you know, it’s not just about health care. It’s also about preventative health care. So better school lunches, healthier school lunches, and also a contentious approach to the food industry.”

“Right now, it’s just the plain fact that I know a lot of people who need health care, who don’t have it, and I love them and I want them to be healthy,” said Grenier. “I want them to have the opportunity to go see a doctor if they need to and, in fact, I’ve been trying desperately to get a friend’s health care and it’s very difficult. So I’m very happy that the bill passed and I think it’s the right thing to do. And it may not be a perfect bill but, you know, let’s take the first step and make it worth it.”

According to its official Web site, the Creative Coalition is the “premier non-profit, non-partisan social and political advocacy organization of the entertainment industry.”