Increased UV from ozone depletion sterilizes trees

Increased UV from ozone depletion sterilizes trees 02/14/2018 11:53 AM EST University of California, Berkeley, paleobotanists put dwarf, bonsai pine trees in growth chambers and subjected them to up to 13 times the UV-B radiation Earth experiences today, simulating conditions that likely existed 252 million years ago during the planet's worst mass extinction. The UV-B made the pines temporarily sterile and created malformed pollen, evidence that ozone depletion from volcanic eruptions could have led to high UV-B levels that contributed to the end-Permian ... Full story at http://news.berkeley.edu/2018/02/07/increased-uv-from-ozone-depletion-sterilizes-trees/ Source University of California, Berkeley This is an NSF News From the Field item. Follow NSF:  This email was sent using GovDelivery Communications Cloud on behalf of: National Science Foundation Update · 2415 Eisenhower Avenue, Alexandria, VA 22314 · 703-292-5111