One of Nature's greatest secrets, how ocean slime turned the world green with vegetation, has been uncovered by scientists. Scientists have … | more… https://www.google.com/url?rct=j&sa=t&url=http://www.shropshirestar.com/news/uk-news/2015/10/05/scientists-uncover-secret-of-how-algae-turned-world-green/&ct=ga&cd=CAIyHDQxMjEzYTNjZmYwOWZjYzQ6Y28udWs6ZW46R0I&usg=AFQjCNFTexcqbwJ6XKXKoXfjyES4by2QzA