Arctic’s ancient past offers glimpse of global warming’s future
A world-renowned Ellesmere Island fossil site has shed startling new light on how warm the Canadian Arctic was about four million years ago - and just how hot it could get in the coming decades.
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“The Arctic climate system may be much more sensitive to greenhouse gas warming than previously thought, and current CO2 levels may be sufficient to bring about significant and irreversible shifts in Arctic ecosystems,” states the study, to be published this week in the journal Geology.