Nature World: New research suggests a record of ancient climate change is embedded in magnesium deposits present in ancient plankton shells. With further research, scientists may be able to use these ancient plankton shells to establish climate variability in Earth's far distant past, as well as provide new methods of measuring ocean acidification and salinity in past oceans.
The research, published in the journal Earth and Planetary Science Letters, reveals new insights on the state of the climate hundreds...