How to build a space station

USA Today provides this excellent Flash timeline graphic, showing the addition of each module, truss, and solar panel as the greatest-ever construction project in space has grown over the years. The International Space Station may have been troubled by politics, cost overruns, and technical glitches, but it is vital that our species learn how to build off-planet, and the only way to learn the lessons needed for the future is to actually build a complex habitat like this.

THANKS TO Paul Kolodziejski for sending me this.