My Question: Inhabitat's Week in Green: worlds largest LEGO Christmas tree, turbine powered LEDs and a hydrogen fuel cell vehicle

Each week our friends at Inhabitat recap the week's most interesting green developments and clean tech news for us -- it's the Week in Green.

This week Inhabitat got into the spirit of the holiday season as we reported that a French firm wants to transform the Eiffel Tower into a gigantic tree, we brought you the world's largest LEGO Christmas tree, and we watched GE flip the switch on the new National Christmas Tree, which is decked out with high-tech LED lights. We also spotted a seriously sweet Star Wars AT-AT walker made entirely from gingerbread, and we shined the spotlight on the amazing life-size light-up ice palaces that rise each year at the Harbin snow festival in China.

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