Ebtehaj works at the University of Minnesota's lab on the river at St. Anthony Falls. For the past four years, he and his ...

The barrier islands off the coast of Georgia are littered with millions of oysters left behind by Indigenous peoples. New ...

As the climate warms, drought conditions are intensifying in many parts of the world. The effects of hydrological drought on ...

In stark black-and-white and stunning color, this year's winning photographs capture global events on a human scale ...