Stephen: ...how often does lightning strike the earth, on an average day?
Jo: Four.
Stephen: Four? So we got four. I can say that it's more than four. Anybody would like to--
Jo: Is it five?
*reps*
Stephen: 17 million times a day.
Jo & Alan: No way!
Stephen: It means about 200 times a second!
Alan: Why can't we harnest that power?
Stephen: *reps* We... We should... How many people in Britain do you think gets killed each year by lightning strikes?
Alan: Tw-- Twelve.
Sean: None.
Jo: 30!
Alan: Two.
Stephen: It's between three and six, actually, it's not very many.
Alan: Four or five.