"Humans have in the space of a few centuries swung a wrecking ball through the Earth’s biosphere. But liquidating biodiversity to produce products and services has an end point." Earth's 6th mass extinction is under way - but are we bothered? 25th July 2015 www.theecologist.org/blogs_and_comments/commentators/2946415/earths_sixth_mass_extinction_is_under_way_but_are_we_bothered.htm Dodo, taken from Naturalists' Miscellany of 1793. Photo: Kevin Walshvia Flickr (CC BY-NC).