Nature and EnvironmentFixing our concrete problemsTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoNature and Environment01/13/2017January 13, 2017After water, concrete is the substance most widely consumed by humans. This ubiquitous substance is highly polluting but a German firm has developed a way of recycling old concrete.https://p.dw.com/p/2VjJnAdvertisement