BBC: Global economic growth – in its current form – cannot continue if nations are serious about curbing climate change, says Andrew Simms. In this week’s Green Room, he warns that the consumer society cannot “have its planet and eat it”. From birth until it reaches sexual maturity at about six weeks, a hamster doubles its weight each week. If, instead of levelling-off in maturity, it carried on growing – continuing to double its weight each week – we would be facing a …