Abstract: A waste gas burner is provided with a flare stack for receiving waste or hazardous gas, a chamber for receiving said gas from said flare stack, said chamber having variable openings for the passage of air, apparatus for increasing the velocity of the gas in the chamber creating a vacuum whereby ambient air is drawn into the chamber and mixed with the gas, a flare tip on said chamber for the passage of mixed gas and air and an ignitor adjacent the flare tip for igniting the gas mixture of gas and air.