The source of all ball lightning?
By Zeeya Merali WHILE on a camping trip in Netanya, Israel, Dora Jerby and her friends saw a football-sized orb emerge from near the seashore. “It seemed to be emitting light from its core,” she says. That was 50 years ago. Now, her son Eli Jerby has created a floating ball of flame in his lab, and thinks it might help explain the weird phenomenon of ball lightning. Eyewitness accounts of ball lightning describe glowing spheres of various colours and sizes, ranging up to a few metres across. Some drift slowly high up in the sky,