You might think the answer to ‘how many species of penguins are there’ would be simple… but its not. In fact, you may well have just stumbled into the most contentious issue in the world of ...

And the emperor is not alone: More than half of the world's 19 penguin species are in danger of extinction because krill, the keystone of the Antarctic marine food chain, has declined by as much 80 ...

And the emperor is not alone: More than half of the world's 19 penguin species are in danger of extinction because krill, the keystone of the Antarctic marine food chain, has declined by as much 80 ...