SAN FRANCISCO — A new map that relies on satellite data to show the varying height of forests around the world is one step in a campaign to improve climate models by offering scientists information on the amount of carbon stored in trees.

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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...