1. Vawter climbed 103 floors of a Chicago skyscraper on his bionic leg, but its designers are still working on improving it. To optimize it for everyday use, they have to make it even thinner and lighter. Its successor (the iLeg Air?) may meet the Army's stated goal for a bionic leg—10,000 steps without recharging.
Rankings for Greece, Italy, Portugal and Spain fell dramatically because of the impact of the eurozone crisis, while Egypt, Myanmar and Saudi Arabia registered large falls in the wake of recent political and civil turmoil.