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 ...

Two hundred and forty-one years ago, when General George Washington marched back into New York City as British troops were walking out, a volcano erupted in Iceland. For eight months in 1783, Laki ...

Tree rings are not just a great record of a tree’s life, but they can preserve a snapshot of the Earth and beyond at different times. Now Australian scientists analyzing these records have found ...

If a tree's rings are studied in a lab but no one hears them, do they make noise in the climate movement? An associate professor of oboe at the University of Arizona wondered. It led her to team up ...

Our Sun is capable of some truly terrifying outbursts – and now scientists have discovered evidence of its biggest tantrum on record. Tree rings dating back around 14,000 years contain a radiocarbon ...

Leonardo da Vinci seems first to have noticed that widths of tree rings vary in wet and dry years, but there is a big gap between his discovery and a history of tree rings that chronicles Midwest ...