
A section of Hadrianβs Aqueduct in Athens. Its 15-mile network runs beneath the city and is still functional.

A section of Hadrianβs Aqueduct in Athens. Its 15-mile network runs beneath the city and is still functional.

Hansa Ahir, left, who salvages recyclable waste for a living in Ahmedabad, India, bought an insurance policy to cover her income on days when heat makes it dangerous to work.