re:Perseids
Swift-Tuttle produces the Perseids in peaking on august 13 every year and in 2126 the comet is indeed getting back close to Earth and it should be a very spectacular show!
It's all a matter of statistics: so many chances out of so many.
But the orbit has been refined and this info isn't concerning anybody any more.
I remember about Toutatis becoming a threat in....2004! Well, it is supposed to get close, but not that close.
Some TV channels are serious about sciences, some are not; it's up to us and our common sense to judge them.
Raoul