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The most disruptive idea being explored by startups is to channel coal stack carbon dioxide emissions into water filled bags with carbon-eating algae which can re-purpose carbon and hydrogen into fatty acids which can be used to create liquid biofuels.

Mycologist Paul Stamets lists 6 ways the mycelium fungus can help save the universe: cleaning polluted soil, making insecticides, treating smallpox and even flu

Sir Ken Robinson makes an entertaining and profoundly moving case for creating an education system that nurtures (rather than undermines) creativity.

While news from Iran streams to the world, Clay Shirky shows how Facebook, Twitter and TXTs help citizens in repressive regimes to report on real news, bypassing censors (however briefly). The end of top-down control of news is changing the nature of politics.

Rice University professor Richard Baraniuk explains the vision behind Connexions, his open-source, online education system. It cuts out the textbook, allowing teachers to share and modify course materials freely, anywhere in the world.