Darkened by soot from vehicles and factories, the region’s glaciers are absorbing more heat and melting at dangerous rates.

© Jason Gulley for The New York Times

A geologist reflects on the disaster and explains why rapid warming will make deadly glacial floods far more common.

© Jason Gulley for The New York Times

The Iran war has slashed transit traffic at Middle Eastern airports, creating opportunities for hubs in Asia and beyond — at least for now.

© Kim Hong-Ji/Reuters