Health

Football field-sized microalgae production tanks on the Hawaiian coast create a stunning view from space.

The toilet-shaped house of South Korea's sanitation pioneer is now a museum to the john.

A sobering scientific reminder of the human damage caused by the advent of the nuclear age.

A hub of information on tropical diseases and their treatments.

A remnant of the 19th-century dream to discourage people from drinking booze by offering them water.

London's only public statue of the much-married monarch adorns the gate to St Bartholomew’s Hospital.

A monument to the British doctor who connected mosquitoes to malaria.

In this pristine Ecuadorian hippie town, residents remain active well into their eighties and nineties.

A pocket of Buenos Aires with an unusually high concentration of psychotherapists.

This Upper East Side apartment co-op was designed as a tuberculosis sanitarium.

The unusual medical inventions of the man who gave the world Corn Flakes.

The abandoned bathhouse is all that remains of the hot springs considered Florida's original tourist attraction.

Home of the physician who set the leg of John Wilkes Booth after the Lincoln assassination.

Small teepee-like houses built for TB patients have become sheds, studios, and bus stops around Colorado Springs.

A poignant memorial to a young boy whose death spurred a dramatic increase in organ donations in Italy—dubbed the "Nicholas Effect."