Weird Fact: Lightning can go up as well as down.

Upward lightning has been known about since the 1930s, but only recently have high speed video cameras allowed scientists to capture this unexplained phenomenon in action…

 

[youtube=http://www.youtube.com/watch?v=HnvMddYUrhg;&w=450;&h=300]

 

The explanation? No-one knows for sure, but one expert’s theory is that downward lightning strikes cause large amounts of electric charge to build up around the top of tall man-made structures. All built up and nowhere to go, the charge then returns to the sky as super lightning – even stronger than regular downward lightning.

This weird phenomenon is becoming more and more common in cities with tall buildings. And when it does occur, it creates a cycle of more lightning, leaping between sky and Earth, barraging the city with more dangerous strikes.

For a more in depth look at upward lightning, check out this clip from Invisible Worlds:

 

[youtube=http://www.youtube.com/watch?v=FxZLPuHdqbw;&w=450;&h=300]