Treecicles

MIT-WHOI Joint Program graduate student Jessie Pearl led a team into the Acushnet Cedar Swamp State Reservation in New Bedford, Mass., recently in search of white cedar trees from which to collect core samples. Pearl is using growth data from her samples to construct a climate history for the Northeast. On this trip, however, she and her team were foiled by the weather—the trees they attempted to core were frozen solid.(Photo by Ken Kostel, Woods Hole Oceanographic Institution)