BusinessKrieger - Have you planted a tree today? 02:06This browser does not support the video element.BusinessMarta Grudzinska | Ute Schneider09/17/2019September 17, 2019As climate protestors take to the streets all over the globe, reporter Olaf Krieger has decided he can no longer sit by and watch. He's started planting trees, and also went to see teen activist Greta Thunberg leading a demonstration in Berlin.Copy linkAdvertisement