'Tanned' whales' sun response clues to human ageing

The way that whales react to sunlight can shed new light on the human ageing process, say researchers. Some species react by getting darker with UV exposure in the same way as humans get a tan. via Pocket http://www.bbc.co.uk/news/science-environment-23882667#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa