But at shallower depths currents abruptly hit a wall. 2011 Fracturing of the Panamanian Isthmus during initial collision with South America.
They've found a bump in animal migration three million years ago, but a spike in flora migration 10 million years ago, in support of the revisionist time frame. She expects this blog to become less and less coherent as she becomes more and more sleep-deprived."This is the most interesting for me, because if you tell somebody living in Nepal that the isthmus rises three million years ago versus 10 million—who cares? "But think about this: having ice in the Arctic is the reason we're in the climate we are right now, and we still don't have a clear mechanism for it. How can we even think about modeling the climate of the next 100 years if we cannot model how to produce such a big feature of our climate today?" Climatologists will have to begin taking seriously alternative theories about why the ice ages began, says geologist Peter Molnar of University of Colorado at Boulder's Cooperative Institute for Research in Environmental Sciences.It is not so unusual for plants to cross where animals dare not tread. The famous 19th-century naturalist Alfred Russel Wallace discovered that animals do not cross the strait separating Bali and Lombok, as if observing an invisible line.