SAN FRANCISCO — The first global analysis of melting glaciers and ice caps showed that while approximately 1,000 cubic meters of water poured into the world’s oceans between 2003 and 2010, a smaller fraction of that water came from mountain glaciers than scientists had expected.

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Debra Werner is a correspondent for SpaceNews based in San Francisco. Debra earned a bachelor’s degree in communications from the University of California, Berkeley, and a master’s degree in Journalism from Northwestern University. She is a recipient...