Galleries / Where Every Windmill Is a Gusher: Offshore

A small town in Saxony has figured out how to run entirely on biomass—and create an energy surplus.

The recent imaging of two 300-million-year-old proto-spiders was just the tip of the iceberg: Here are 12 new scanning technologies that are bringing amazing 3-D images into Hollywood, medical care—and home PCs.

Floating cities. A building with a million residents. An oil rig turned into a tourist getaway. Some architects are dreaming of a wild green revolution.