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Magnesium within plankton provides tool for taking the temperatures of past oceans

Source
Phys.org

Publication Date
2017-05-16

Scientists cannot travel into the past to take the Earth's temperature so they use proxies to discern past climates, and one of the most common methods for obtaining such data is derived from the remains of tiny marine organisms called foraminifera found in oceanic sediment cores.

Content
https://phys.org/news/2017-05-magnesium-plankton-tool-temperatures-oceans.html