the greenland ice sheet is at least 400,000 years old and warming was not global when europeans settled in greeland 1,000 years ago
the greenland ice sheet is at least 400,000 years old and warming was not global when europeans settled in greeland 1,000 years ago
sea level rise:3
this acceleration is due mostly to human-caused global warming, which is driving thermal expansion of seawater and the melting of land-based ice sheets and glaciers.