Artist Jeanne-Claude, who with her husband Christo, created public art installations around the world, has died. She was 74. Her family said she died Wednesday night at a New York hospital from complications of a brain aneurysm.

Green technology can take many forms, be it in eco-friendly light bulbs, hybrid cars, or wind turbines. It can even take the form of homework, as in the case of students competing in the Department of Energy's "Solar Decathlon."…