Guardian: As you travel along the drive to James Lovelock’s house, located in a remote, wooded valley on the Cornwall-Devon border, you pass a sign by a gated cattle grid. "Experimental station," it reads. "Site of a new natural habitat. Please do not trespass or disturb." Thirty years ago, Lovelock planted 20,000 trees to create the much more biodiverse habitat around his home. But you suspect that, had this fiercely independent scientist and globally respected environmental thinker been …