At least 2 mass #extinction events in Earth's history were likely caused by the devastating effects of nearby #supernova explosions. That's according to a new study released today by researchers at Keele University in England. The researchers said these super-powerful blasts - caused by the death of a massive star - may have previously stripped our planet's atmosphere of its ozone, sparked acid rain and exposed life to harmful ultraviolet radiation from the sun. They believe a supernova explosio

450 reactions · 16 shares | The world of dinosaurs brought to life like never before 練秊 As bones emerge from the ground, #WalkingWithDinosaurs will use cutting-edge science and state-of-the-art visual effects to tell the gripping stories of these magnificent creatures. Watch Walking With Dinosaurs every Sunday, 8:00pm on #BBCEarth. | BBC Earth | Facebook