Science news this week: Atlantic current edges closer to collapse, scientists make artificial-neuron breakthrough, and a copy of the "Iliad" is found inside an Egyptian mummy
Science news this week: Physicists witness faster-than-light darkness pinpricks, humans are still evolving, and some polar bears are getting fatter than ever
Science news this week: Physicists witness faster-than-light darkness pinpricks, humans are still evolving, and some polar bears are getting fatter than ever