By soaking up water from fog as well as rain, coastal redwoods have helped scientists reconstruct climate patterns of the Pacific Ocean. "Redwoods are restricted to a very narrow strip along the coastline. They're tied to the coastline, and they're sensitive to marine conditions, so they actually may tell you more about what's happening over the ocean than they do about what's happening over land," said Jim Johnstone, co-author of the study published in the Journal of Geophysical Research: Biogeosciences. Researchers measured the different levels of oxygen trapped inside the wood.
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