For the past few years, ‘human spontaneous combustion’ has
been considered as a result of ball lightning in nature. That
is to say, it is not out of self-burning but external ignition.
People holding this kind of view explain that ball lightning is
like a big fire ball moving swiftly in the air, which always
horrifies the pedestrians at night.
Ball lightning can go through the gaps between doors and
windows and enter houses in residential areas. Its occasional
explosion may destroy buildings and lead to death of people and
livestock. No obstacles can block its way while it can avoid
getting combustible things burnt around.
Usually, the energy released by each explosion of ball lightning
equals to that of 10kg TNT. Smells of something burnt, sulphur
or ozone can linger after the disappearance of blasted ball
It is also pointed out by someone that ball lightning is related
to UFOs. Some suggest that most UFOs may be ball lightning on
account of the mysterious behavior of the latter.
The reason comes from two aspects: ball lightning is as various
as UFOs in color, like white, pink, orange, blue and so on;
they also share something in common in sound, as ball lightning
fizzes and cracks when moving and fades away quietly.
Most UFOs can’t be heard because they are from a great distance,
but there are few UFO rumbling or whirring while flying; and some
UFOs release a large amount of energy, which is very similar to
ball lightning as both of them are able to float in the air with
elusive drifting. However, dissenters suggest otherwise that ball
lightning always appear in storms with thunder, while most UFOs are
spotted during sunny days. Furthermore, the movement of ball lightning
overhead totally depends on the airflow, but UFOs seem not always
in line with it.