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Unstoppable! Airless tire will never go flat
10 challenges for your airline and airport in 2013
Top 20 most popular future jobs of 2030: Vertical farmer, limb maker, waste data...
Peak oil isn't dead; it just smells that way
Firm turns shipping pallets into transitional homes for refugees
Finally, a urinal for girls
Smart concepts on Kickstarter (photos)
Energy independence, or impending oil shocks?
The cost of new oil supply
15 most rewarding jobs of 2013
Can we live without plastic?
The 21st century population crash