66K views · 141 reactions | Life During The Ordovician Mass Extinction. | IFLScience | Facebook

7.1K views · 88 reactions | The world’s animals and wildlife are going extinct at a greater rate than at any time in human history. Can technology help turn the tide? https://econ.st/2UZE6TB | The Economist | Facebook

6.9K views · 147 reactions | Stanford biologist Liz Hadly says the effects of mass extinction are already apparent in California. Salmon and eagle populations have declined, and the state’s iconic grizzly bear has gone extinct. https://cbsn.ws/3GaqUzb | 60 Minutes | Facebook

43K views · 59 reactions | A mass extinction of species due to the changing climate will have cascading effects on human populations, according to the most recent IPCC report — here’s why we need to act now | NowThis Earth | Facebook

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