Renewable energy like wind-power, solar PV, and hydroelectric power can replace almost all uses of coal, gas, and petroleum. Air travel, if it continues to be used, may require carbon fuel in the form of bio-fuels that are made from vegetable sources that consume atmospheric CO2 at about the same rate as the fuel is made from them is burned. Shipping at sea will probably require some fuel, perhaps electrical energy stored as H2 hydrogen. Land surface transportation can be done entirely with electricity from renewable sources