The Water Future of Earth's "Third Pole"
by Carol Rasmussen (excerpt)
In this excerpt, Carol Rasmussen, a member of NASA's Science
Earth News Team, reports on scientists who are studying the
water resources of the world's Third Pole-the region where the
mountain ranges of Asia are located.
(1) Himalaya. Karakoram. Hindu Kush. The names of Asia's high
mountain ranges conjure up adventure to those living far away,
but for more than a billion people, these are the names of their
most reliable water source.
(2) Snow and glaciers in these mountains contain the largest
volume of freshwater outside of Earth's polar ice sheets, leading
hydrologists to nickname this region the Third Pole. One-seventh
of the world's population depends on rivers flowing from these
mountains for water to drink and to irrigate crops.
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