Media type: E-Article Title: Sprucing up Greenland Contributor: Steig, Eric J.; Wolfe, Alexander P. imprint: American Association for the Advancement of Science, 2008 Published in: Science Language: English ISSN: 0036-8075; 1095-9203 Keywords: Commentary Origination: Footnote: Description: <p>Pollen data suggest that the Greenland ice sheet was much smaller during previous warm periods.</p>