books.google.ca - Richard Alley, one of the world's leading climate researchers, tells the fascinating history of global climate changes as revealed by reading the annual rings of ice from cores drilled in Greenland. In the 1990s, he made headlines with the discovery that the last ice age came to an abrupt end over a...http://books.google.ca/books/about/The_Two_mile_Time_Machine.html?id=DS2hIKuE3_sC&q=ice-isotopic&utm_source=gb-gplus-shareThe Two-mile Time Machine
