Access

News and Views

Nature Geoscience 1, 570–572 (1 September 2008) | doi:10.1038/ngeo286

Climate science: A tale of two ice sheets

Mark Siddall & Michael R. Kaplan

The large rocks that litter vast expanses of the continents were once thought to have been deposited by the great mythological flood. Only in the mid 1800s did Louis Agassiz and similar-minded colleagues realize that these rocks and other features were instead left behind by retreating ice masses, which had once covered vast areas of the continents.