LiveScience: The polar bear is the poster child for species threatened with extinction by climate change. But a new study finds that the Arctic animals may get a reprieve in the form of an abundant supply of eggs from snow geese. The findings aren’t bad news for snow geese, either, the researchers report online in the journal Oikos. No matter how many goose eggs polar bears consume, the geese are safe from extinction. That’s because the overlap, or match, between snow goose nesting and polar bear hunting is…