For years it was sold as paradise - sunny beaches, rainforest zip lines, pura vida - safe, simple, welcoming. Now, many Americans are asking tougher questions.

The Congo Basin rainforest is the world’s largest carbon sink, absorbing more carbon dioxide than the Amazon. Often described as Africa’s “green lung”, it helps regulate the global climate, with ...

For almost two decades, Brazil's largest soy producers guaranteed their products did not come from land cleared in the Amazon rainforest. Now, all bets are off.