- Researchers claim human activity forced Earth into a new epoch.Isotopes left behind by nuclear weapons testing and increasing CO2 emissions have also drastically altered the planet’s ecosystems.Experts believe that the sixth mass extinction is “probably already underway.” http://www.redorbit.com/news/science/1113411945/researchers-claim-that-human-activity-has-forced-the-earth-into-a-new-epoch-010915/? 4 comments worldnews
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