Another natural phenomenon that science has yet to explain is ball lightning.Ball lightning is the term for rare balls of light,usually at last as big as doorknob and sometimes as big as soccerball, that float through the air during thunderstorms.These balls have no smell and no heat. they usually vanish soundlessly or explode with a loud pop when they come across something electrical,like a computer or TV. Although these strange electrical occurrences are not common,there have been occasional reports of ball lightning for centuries