The back-up of the home prototype. The Scientific Report published on 11 May of this newspaper published a study pointing out that up to 8 per cent of the concretes and booths used for the construction of single-storey houses could be replaced by dredging one-time urine without significantly diminishing their carrying capacity. The author suggests that the abandoned one-time paper urine or building materials that can be used as low-cost economic housing in low- and middle-income countries. A ...