UC Irvine Earth system scientists Hui Wang (left) and Allison Welch collect Arctic vegetation samples on tussock tundra of the North Slope in Alaska. Credit: Alex Guenther / UCI Arctic and boreal latitudes are warming faster than any other region on Earth. In three new studies, Earth system scientists at the University of California, Irvine report how the ecosystems in these regions are changing. In a study published in Global Change Biology , a team led by Earth system science Ph.D. candidate J...