Nicole Wunderlich, enjoying her first field experience on the northern tundra.
Carissa Brown collecting tree cores near latitudinal treeline in North Yukon.
Sara Pieper, in her field camp in the Yukon mountains.
Jayme Viglas in a burned stand of black spruce, posing with one of the trees she is aging from root collar sections.
Jill Johnstone poses with a burned black spruce tree in Alaska that has formed a lovely calligraphy "J".