I love science!
I get regularly depressed reading about the latest ways that big corporations and governments spend billions to kill and maim people in more inventive ways, but whenever I'm down suddenly something like this comes along and restores my faith that there loads of GOOD boffins out there who want to make the world a better place.
Recycled drinks bottles for heaven's sake - could it get any neater? A cure for diabetes made out of sweet wrappers?