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Articles sur Water

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An orchard near Kettleman City in California’s San Joaquin Valley on April 2, 2021. Frederic J. Brown/AFP via Getty Images

Water wells are at risk of going dry in the US and worldwide

The US has one of the highest groundwater use rates in the world. When wells run dry, households may opt to conserve water, find new sources or sell and move.
The California Aqueduct, which carries water more than 400 miles south from the Sierra Nevada, splits as it enters Southern California at the border of Kern and Los Angeles counties. California DWR

Installing solar panels over California’s canals could yield water, land, air and climate payoffs

Installing solar panels over California's 4,000 miles of canals could generate less expensive, renewable energy, save water, fight climate change – and offer a solution for the thirsty American West.
Aerial view of Lake Powell on the Colorado River along the Arizona-Utah border. AP Photo/John Antczak

Interstate water wars are heating up along with the climate

The Supreme Court recently dealt defeat to Florida in its 20-year legal battle with Georgia over river water. Other interstate water contests loom, but there are no sure winners in these lawsuits.
Futures won’t affect whether there’s water in the hose. Bettmann/Getty Images

Why Wall Street investors’ trading California water futures is nothing to fear – and unlikely to work anyway

The world's first futures market for water launched in California in December. Two commodities experts explain how it works, what the potential problems are and why there's no reason to freak out.
Shutterstock/ Nataly Reinch

Why South Africa needs a new water agency

The agency will ensure that large water users such as municipalities, public utilities and large companies continue to fund the construction and operation of the large water systems they depend on.
Where do the hydrogen and oxygen that make up the earth’s water come from? NASA Goddard/Flickr

Why is there water on Earth?

A recent study shows that the Earth's water could come directly from the oxygen and hydrogen present in the rocks that formed it, and not from a late supply by asteroids.
The greenhouse effect and plate tectonics are essential for maintaining water on the Earth’s surface. NASA/Goddard Space Flight Center/Reto Stöckli

Why is the Earth blue?

The presence of water on the Earth's surface is the result of a subtle balance between different mechanisms in the atmosphere and below the surface.

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