They analyzed ancient subsea volcanic ashdeposits and found a link between them and melting polar ice associated with warming climates, on an odd, millennia-long delay.
Conservationists working in a new branch of the library still face the task of removing ashdeposits between pages, repairing parchment volumes and vellum spines that split in the fierce heat a painstaking process that involves weeks of work on each book.
However during the bloom triggered by the ashdeposits from the eruption, the team recorded that it was a shortage of nitrogen that limited the size of the phytoplankton bloom and - as a result - the volume of carbon dioxide uptake.