Kevin Spacey, Julia Roberts, Harrison Ford Speak for Nature in Clever New Ads

Harrison Ford arrives at the Hollywood premiere of 'The Expendables 3' in 2014. Ford provided his voice to the ocean for a series of conservation messages. (Photo: Tinseltown/Shutterstock)

While some environmentalists are fond of the saying "Save the Earth!", the truth of the matter is that Earth is no danger of going extinct. The human race is but a moment in our planet's 4.5 billion year history — and if we jeopardize our own existence through pollution, overconsumption and destruction, Earth will take but a few hundred years in our absence to right the course.

That's the gist of Conservation International's new clever ad campaign "Nature is Speaking," which features the aggressive tagline of "Nature doesn't need people, people need nature." The organization recruited some familiar names to give voice to some of our planet's lifegiving features — including Kevin Spacey as the rainforest, Edward Norton as the soil, Harrison Ford as the ocean, Robert Redford as the redwood forests and Julia Roberts as Mother Nature.

"I'm most of this planet. I shaped it," says Ford in his angry voice. "Every stream, every cloud and every raindrop, it all comes back to me. One way or another, every living thing here needs me. I'm the source. I'm what they crawled out of. Humans? They're not different. I don't owe them a thing. I give. They take. But I can always take back." In an interview with Fast Co. Create, legendary ad man Lee Clow said the ads seek to fix the idea that the planet needs saving — when really, it's the human race that's in trouble.

"Nature will be here long after us, so the idea that we can fix nature is I think kind of preposterous, but the idea that we desperately need nature and we better be the best stewards we can be because of that, might be a more democratic and all-inclusive appeal," he said. "As opposed to right versus left, corporations versus ecologists, this is about the human race versus extinction. It’s all of us, as opposed to various factions and groups."

In support of the campaign, HP has teamed with Conservation International to donate up to $1 million for those who re-tweet using the #NatureIsSpeaking hashtag.

Check out some additional ads below. New shorts featuring other celebs are expected to premiere shortly on