IN THE AMAZON JUNGLE, ECUADOR -- Vampire bats are well-adapted to the rain forest. They come out at night and use heat sensors to find a goat, child or other mammal. If the prey has fur, they use special teeth to shave the skin, then cut it almost painlessly and lap up the blood. But the question is: Can we humans adapt as effectively to the rain forest?

It doesn't seem so. Instead of living in harmony with the rain forest -- or only as parasitically as, say, a vampire bat -- we're destroying the jungle in ways that contribute hugely to global warming.

Somewhere in the world, we cut down an area of jungle the size of a football field every second. Deforestation now contributes as much to global warming as all the carbon emitted by the United States.

That's the challenge Douglas McMeekin and Juan Kunchikuy are trying to address. As I noted when I began their story in my Monday column, they make an unusual pair: Mr. McMeekin is a 65-year-old American businessman; Mr. Kunchikuy is a 30-year-old naturalist from an indigenous tribe who grew up in the rain forest with his blowgun and never wore shoes or saw electricity until he was 17.

They have joined forces to protect the rain forest by working with local inhabitants, trying to create incentives for them to leave trees standing -- while also raising local living standards.

"People have to make a living," Mr. McMeekin said. "But they can chop down 50 acres of forest to make a pasture, or they can earn the same income by chopping down 5 acres and planting cacao."

So his organization, Yachana Foundation, is distributing high-quality cacao seedlings to encourage farmers to manage small plots that leave most of the jungle intact. Yachana operates a factory that buys the cacao and turns it into mail-order chocolate.

Yachana also encourages family planning -- to reduce population pressures that lead to deforestation -- and runs a private high school to train young people from throughout the Ecuadorean Amazon. The 120 students in the school get a superb education; the first graduation will be in July.

One aim is to build a core of indigenous leaders who can represent local views internationally and serve as agents of change within the region. Mr. Kunchikuy -- who speaks fluent English and serves on the board of Yachana Foundation -- is a prototype. He's as comfortable with a microphone as with a blowgun.

The school focuses on practical skills, such as how to graft cacao or fruit-tree saplings, or how to operate fish ponds. The idea is to earn good incomes without large clear-cuts.

Many students work part time in the foundation's neighboring eco-lodge, which has 18 rooms catering to American tourists (and generates part of the cash to pay for the school).

As I walk through the jungle paths here, serenaded by birds and monkeys overhead and the splashing of turtles, I marvel at this land. The Amazon is grand for putting us humans in our place -- until you reach a clear-cut, where the spell breaks and you realize maybe we're not so puny after all.

One approach to saving the rain forests is to pay poor countries to preserve them. Research suggests that by paying tropical countries $27.25 per ton of carbon not emitted by destroying forests, the world could avoid $85 in damage per ton from the carbon.

But these can't just be transactions with governments; too often we lose sight of the inhabitants of the forests. In a remote part of Central African Republic, I once found teams of Western volunteers dedicated to preserving gorillas -- but there were no volunteers helping local Pygmies dying of malaria.

With Yachana, this partnership of an American businessman and an Amazonian hunter, we have a model of how to help the forest by helping the people who live in it. Preserving the rain forest should be a priority, if we have a bat's brains.