The controversy over construction of Nicaragua's Interoceanic Grand Canal makes it a good time to look at the some of the biggest man-made waterways on the planet.
More than 50,000 gallons of oil spilled into Montana's Yellowstone River after a pipeline burst.
A vast ancient canyon lies buried underneath a present-day river that cuts through the Himalayas in Tibet.
A gorge formed by an earthquake and a violent river arrived quickly and could be gone in 50 years.
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.
A fantastical water vessel cleans pollution from waterways, transports travelers and also serves as a floating garden.
Geographic features responsible for biodiversity also shape human languages.
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