Humans may be reversing the climate clock, by 50 million years

Our future on Earth may also be our past. In a study published in the Proceedings of the National Academy of Sciences, researchers show that humans are reversing a long-term cooling trend tracing back at least 50 million years. And it's taken just two centuries.Epihippus gracilis, one of the many early horses found in the Hancock Mammal Quarry in Oregon, depictedaround 30 million years ago. Their ancestors would have gotten their...[[ This is a content summary only. Visit my website for full lin