According to the IPCC, transportation accounts for 14% of global greenhouse gas emissions,[1] and according to the EPA it's 27% of US emissions.[2] Obviously ro

According to the IPCC, transportation accounts for 14% of global greenhouse gas emissions,[1] and according to the EPA it's 27% of US emissions.[2] Obviously road-based transport is only one part of transport, which also includes ships, trains, and planes. [1] https://www.epa.gov/ghgemissions/global-greenhouse-gas-emissions-data#Sector https://www.epa.gov/ghgemissions/global-greenhouse-gas-emiss... [2] https://www.epa.gov/ghgemissions/inventory-us-greenhouse-gas-emissions-and-sinks https://www.epa.gov/ghgemissions/inventory-us-greenhouse-gas...