This one, however, unifies an awful lot of the properties of ball lightning under one theoretical umbrella, so I think it stands a very good chance of perhaps being correct.

BBC: New lead for fireball riddle

The new work by Messrs Jerby, Dikhtyar, Mitchell and their colleagues is not proof that natural ball-lightning consists of silicon nanoparticles.

ECONOMIST: Ball lightning

Ball lightning occurs so rarely that few photographs of it exist and researchers have had to rely on eyewitness accounts, some of them from previous centuries.

BBC: Ball lightning baffles scientists

On one of her solitary girlhood walks, she once found herself accompanied by a lightning ball.

ECONOMIST: Yelena Bonner | The