Greenhouse gases like carbon dioxide (CO2) are released when we burn oil, gas and coal for our homes, factories and transport. Methane is produced through farming and landfill. These gases cause global warming by trapping the sun’s energy. Net zero means not adding to the amount of greenhouse gases in the atmosphere. Achieving it means reducing emissions as much as possible, as well as balancing out any that remain by removing an equivalent amount.C an the world produce Zero percent of greenhouse gases ?

