The finding gives scientists their first solid evidence that the rays don't just come from all over, says Glennys Farrar, a theorist at New York University in New York City. (sciencemag.org)
Even more important, the first solid evidence of lethal group violence among our ancestors dates back not millions, hundreds of thousands, or even tens of thousands of years, but only 13,000 years. (discovermagazine.com)
Palaeontologists have long suspected that some dinosaurs migrated, but this is the first solid evidence of it, says Paul Barrett of the Natural History Museum in London. (newscientist.com)