Safe or not?
Saw a programme about this last week (well, featuring it) and farmers etc were saying they set crops on fire. Didn't believe it but also didn't think much of it at the time. But generally thought "no, heat rises - the flame will be out by the time it hits the floor again"
They seem the 'latest' thing for celebrations. But oddly enough of all the sheds in all the world, a bloody chinese lantern landed on mine and it was all scorched. Thinking again now. Me bloody shed might have gone up