
When the Earth Was Green review: Gripping account of how plants and animals co-evolved
An artist’s impression of an environment where prehistoric plants thrived Christian Jegou/Science Photo Library When the Earth Was GreenRiley Black (St Martin’s Press (US, available now; UK, later this month)) The behaviour of plants is invisible to the naked human eye. They operate on timescales our imaginations can’t entertain, and they run roughshod over familiar categories…