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Earth’s cornucopia of life has evolved over 550 million years. Along the way, five mass extinction events have caused serious setbacks to life on our planet. The fifth, which was caused by a gargantuan meteorite impact along Mexico’s Yucatan coast, changed Earth’s climate, took out the dinosaurs and altered the course of biological evolution. Today nature is suffering accelerating losses so great that many scientists say a sixth mass extinction is underway . Unlike past mass extinctions, this event is driven by human actions that are dismantling and disrupting natural ecosystems and changing Earth’s climate. My research focuses on ecosystems and climate change from regional to global scal... Full story

23 April