Images of an ecosystem in flux by wildlife photographer Paul Souders.

New technologies offer promise for expensive process of making saltwater fresh.

A mixtape honoring our favorite form of transport.

From melting ice caps to volcanic hot springs, Roni Horn's art is inspired by Iceland's shifting landscape.

Photographer continues his decade-long documentation of our dependence on oil.

Japanese artist Chiharu Shiota contemplates the connectedness of things...visible and not.

Award-winning book compels consumers to think about where their things come from.