Showing how eyes in the sky can help people on the ground.
A system of canals 2 millennia old sustained a local population after the collapse of its neighbors, and it continues to affect local ecology today.
The reef’s report card analyzed 286 sites in Mexico, Belize, Guatemala, and Honduras. Communities, scientists, and governments are working to improve coral and ecosystem resilience.
One agricultural network was 5 times larger than earlier estimates, and the fields may be an early source of human-caused greenhouse gas emissions.