Recent expeditions offer explanations for the lost city and the people who abandoned it centuries ago.
Aggressive logging is threatening a new coffee tree species that was discovered in Cusuco National Park, Honduras, just two years ago. Now International Union for the Conservation of Nature is declaring it "critically endangered."
The current coffee-farming system, which involves non-shade farming and low prices wrested from poor farmers, is causing problems. These methods have been in place only since the 1970s and 1980s, and a study talks about how they could be changed.