The desert that we see today in Arabia was once a region that repeatedly underwent "green" periods in the past, as a result ...

"These hydrologic oddities illustrate how much we have still to learn about Earth's dynamic surface," researchers said in a ...

Nevada’s Native American reservations have faced historic challenges in establishing reliable sources of energy and water.

Chicago's eastern boundary is formed by Lake Michigan, and the city is divided by the Chicago River into three geographic sections: the North Side, the South Side and the West Side. These sections ...

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