Mass Extinction
Population Growth/Habitat Loss
Global Warming (Sea levels, Glaciers, Weather Change)
Kaya Identity: total carbon emissions = per capita income, total population, the energy intensity of economic output & the carbon content of economic output
Agriculture & Fisheries
96% of mammals are humans or livestock reared for humans,
& 70% of birds are poultry, mainly chickens (FT, 09/03/21)
Disease
Soil
Ozone
Chemical
Nuclear