Physorg: It’s December, and undergraduate Jenny Middleton bundles up to face the cold. While all across campus, students, and faculty don their winter gear, Middleton is not preparing for the New England winter; she is preparing for an expedition through the Earth’s coldest desert: the McMurdo Dry Valleys in Antarctica. “Occasionally, like when the wind is blowing so hard that you can hear the harmonics of a 50-gallon drum as if it were an empty Coke bottle and you can’t see anything due to …