People Earth The ice keeper The Science Life By Alexandra Witze May 2, 2013 at 4:05 pm - More than 2 years ago Share this:Share Share via email (Opens in new window) Email Share on Facebook (Opens in new window) Facebook Share on Reddit (Opens in new window) Reddit Share on X (Opens in new window) X Print (Opens in new window) Print DENVER — “I’m a little tired of the cold,” Geoff Hargreaves says with a sigh. Vasileios Gkinis of the University of Colorado Boulder examines layers in an ice core that reveal environmental changes over time. Gifford Wong/Wais Jeff Kanipe No surprise there: Hargreaves works in a deep freeze — 38 degrees Celsius below zero (−36° F).