Spinning Skyscraper + Damper Ball
Link via Gizmodo
On the subject of skyscrapers, there's more--an insight into how the Taipei 101, the world's second tallest building (at the moment), survived the May earthquake in Sichuan, China. The building uses a 728-ton ball, suspended between five floors in the upper part of the tower, to damp vibrations from high winds or ground tremors. You can watch a video of the damper ball moving during the earthquake here.
Link via Gizmodo and Deputy Dog