Nature World: It seems blatantly obvious that an extremely cold climate spurred Earth's last Ice Age - officially known as the "Last Glacial Maximum" (LGM) - but scientists have long suspected that other factors were at play, and are just now piecing together the rest of the puzzle.
"We have all these scattered pieces of information about changes in the ocean, atmosphere, and ice cover," Raffaele Ferrari, the Breene M. Kerr Professor of Physical Oceanography in MIT's Department of Earth, Atmospheric and Planetary...