The mountains of southeastern California are home to a large rare-earth element mine.

As water dropped to critically low levels, electricity production suffered and power outages plagued Zimbabwe and Zambia.

The mighty Amazon River carries a huge amount of sediment and occasionally delivers muddy water to nearby lakes.

The Bolivian mining city—one of the highest cities in the world—grew at the foot of an eroded volcano riddled with silver.

Days of rain have swollen rivers and lakes in the sparsely populated territory.

The low-lying alluvial plain of the Mississippi River Valley is home to much of the nation's rice farms.

Tropical Cyclone Freddy, an unusually long-lived storm, wandered in the Indian Ocean for more than a month.