Sharks have ruled the Earth’s oceans for 400 million years. Recent research on fossil shark teeth has discovered an innovative method for dating ancient sediments.
Articles on Strontium
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Isotope mapping reveals information about a monarch butterfly’s point of origin. Using strontium isotopes helps pinpoint more precise locations.
Exactly 150 years after Mendeleev’s classic formulation, it’s time for one for the resource-hungry 21st century.
