The actual eco-friendliness of ecotourism varies considerably. One research station in the Peruvian Amazon is out to prove it can bring visitors to the area without disrupting the environment.

The Subway Is Sweltering. Is There a Way to Put That Heat to Good Use?
Mayor Zohran Mamdani and state transit officials announced a plan to study a heat-capture system that could cool a notoriously hot train station and help heat city buildings in the winter.



