The UA has plenty of special features to offer, but one of its more overlooked aspects is its abundant plant life—specifically, that of the Laboratory of Tree-ring Research. UA’s tree-ring lab right ...

"Every tree ring is a time capsule of the radiocarbon at the year in which it grew, so we can say here's a tree ring from 1600 BC and here's how much radiocarbon is in it," she said. The radioactive ...

Tree rings exaggerate, a team of researchers finds. Scientists deduce historical climatic conditions for the past hundreds of years from the width of the annual growth rings of trees. Previous ...