Interesting article on how a plane ticket can be free

In europe there are plane tickets that costs around $20. How is this possible?
The article below explains this.

Awesome cloud formation in the sky

This cloud formation really stuck in my mind invoking some crazy imaginations. What if we had huge tubes like these as conduits to space, or maybe a halo ring/conduit around our planet with a habitats in it. Pretty cool :)

Here's some more cool looking clouds:
* http://www.webdesignerdepot.com/2009/10/the-weirdest-clouds-that-youll-ever-see/
* http://www.wired.com/wiredscience/2009/09/clouds/