We have been to the Moon several times. Next time, we may go back for a considerable period. And concrete plans for a one-way ticket to Mars have already been forged. Food will have to be grown on location. Is this a distant future scenario? Not for Wieger Wamelink, ecologist at Alterra Wageningen UR, for whom the future will begin on 2 April. He will be researching whether or not it is possible to grow plants on the Moon and Mars.