Methane rises to highest level on record

Livestock farming and fossil fuels are main causes of rise in gas, which is 28 times more powerful than CO2 at trapping heatAnimal farming and fossil fuels have driven global emissions of the potent greenhouse gas methane to the highest level on record, putting the world on track for dangerously increased heat levels of 3C to 4C.Since 2000 discharges of the odourless, colourless gas have risen by more than 50m tonnes a year, equivalent to 350m cars or double the total emissions of Germany or Fra