Our climate is out of balance: Increasing accumulation of CO2 in the atmosphere has caused the Earth’s temperature to increase by 0.8° C since the beginning of the industrial revolution. According to a study by Thorsten Mauritsen from the Max Planck Institute for Meteorology in Hamburg and Robert Pincus of the University of Colorado, even if we stopped all emissions from fossil fuels tomorrow, the Earth would still warm by a further 0.3° C. In this interview, Mauritsen explains why it will take millennia for the Earth to get back into balance.