The new Geologic Atlas took more than 100 researchers over a decade to compile. Plus, how gliding marsupials got their ‘wings’ and H5N1 bird flu virus material has been detected in US milk. The new Geologic Atlas took more than 100 researchers over a decade to compile. Plus, how gliding marsupials got their ‘wings’ and H5N1 bird flu virus material has been detected in US milk.