… nature — is critical in eliminating the 45 percent of emissions that arise from how products are made, used and discarded. What is lacking is standardized measurement and … nature — is critical in eliminating the 45 percent of emissions that arise from how products are made, used and discarded. What is lacking is standardized measurement and … nature — is critical in eliminating the 45 percent of emissions that arise from how products are made, used and discarded. What is lacking is standardized measurement and …