A river in China that's normally unpolluted suddenly turned blood red one morning last week.
A new way to predict when rivers are about to flood comes from outer space.
Geographic features responsible for biodiversity also shape human languages.
The effects of mining activity contribute to concerns about a number of prominent waterways.
A circle of ice on North Dakota's Sheyenne River is a rare winter spectacle. Continue reading →
Even though the California Gold Rush took place more than a century ago, it left a toxic legacy of mercury pollution.
The force of hurricane Isaac drove the Mississippi backwards for nearly 24 hours.
A simple, new hydropower dam offers energy without destructive side effects.