The fabled rainforest is starting to release its carbon as climate change, deforestation and other human threats drive it toward the limits of survival.

In north Brazil, the combined effects of a hydroelectric dam and earth-shifting livestock have altered the landscape — and upended peoples’ lives.

At the same time, reporters should be cautious not to oversell small and dubious solutions, as one recent case illustrates.

Panama’s Barro Blanco dam was supposed to help fight climate change. It ended up damning a culture.