Members of the Smog Free Movement definitely care about our world and the air we breathe. Founder Dann Roosegaarde said he woke up one day obsessed with pollution and decided to use Kickstarter to raise funds for building the world's largest air-purifier – Smog Free Tower. Towers would be built in cities with the most pollution and create smog-free zones. They will start with Rotterdam. One tower is able to clear away 123 million cubic feet of smog every day - now imagine what several of them could achieve in a year!

And the extra cool bit about it: all the smog they collect, is processed into a Smog Free Cube and turned into an exclusive piece of jewelry, like rings or bracelets. Could this mean we are finally facing the end of the 'blood diamonds' travesty as well? Diamonds, afterall, are made of carbon, heated and presssurized...

Their crowdfunding campaign on Kickstarter aims to reach the $54,000 mark. In a few days he already managed to raise over $20,000, so we take it he doesn't need to worry about his vision of the green future. It's happening for sure.