David Attenborough claims that humanity has stepped into a new geological age, leaving the Holocene and entering the Anthropocene: the age of humans. The natural historian has made the statement as he urged politicians and businessmen from around the world to make a renewed push to tackle climate change before the damage is irreparable. Get it right, he argued, and humans can create a world with clean air and water, unlimited energy and sustainable fish stocks, but only if decisive action is taken now.