I live in South Africa and we don't have them, on a cold day you will see a contrail from a plane and that is all, and it doesn't hang around in the sky like that, it dissipates quickly so yes I believe that is something to pay attention to.

I love the "alternative" media and I've heard lots about chemtrails. Here's a list:

1. They're hiding something out in space (nothing to see from SA)
2. The aluminium helps the body with the radiation of the suddenly fierce solar activity (could be a good thing..? Although we are not radioactive here)
3. It's the best way to detect the entry of an alien space craft in the atmosphere so it can be shot down.
4. The adverse health effects are likely to kill the elderly and in that way create a younger and more desirable demographic.
5. It contains alien artificial intelligence floating around as nanobots which are inhaled and then slowly begins to assimilate humans until we are no longer in control of our thoughts or bodies.
6. There's a battalion of alien spacecraft around the earth waiting to "arrest" a certain group of reptilians that are hiding inside the earth and the chemtrails help to cloak their escape.
7. The world is run by an ancient satanic cult and their New World Order goal is to depopulate the earth, starting with first world western countries who are generally better educated and more likely to give them trouble.
8. And yes geoengineering - weaponized weather!

So, basically, you'll never know ...