'Humans wiped out 60% of wildlife population since 1970': WWF report reveals 'scary statistics'

'Humans wiped out 60% of wildlife population since 1970': WWF report reveals 'scary statistics'  Firstpost World's vertebrate population dropped by an average of 60 percent since 1970, WWF says  NBCNews.com Mass loss of wildlife caused by human consumption, WWF says  BBC News Global wildlife populations fall 60% as WWF declares state of emergency for natural world  Telegraph.co.ukFull coverage