Biochar from human waste could solve global fertiliser shortages, study finds#biochar#waste streams·theguardian.com·Aug 11, 2025Biochar from human waste could solve global fertiliser shortages, study finds
T23 waste exemption: aerobic composting and associated prior treatment#composting#waste streams#ukgov·gov.uk·Jul 18, 2024T23 waste exemption: aerobic composting and associated prior treatment
