Humanity is ‘cutting down the tree of life’, warn scientists – Guardian October 16, 2018 by Fulcrum More than 300 mammal species have been eradicated by human activities, say researchers. Humanity’s ongoing annihilation of wildlife is cutting down the tree of life, including the branch we are sitting on, according to a stark new analysis. Damian Carrington. Guardian. 15 October 2018 FulcrumShareTweetShare