Lastly, the week saw the unveiling of the world's first fiber-optic solar cell, which is thinner than the width of a human hair and could pave the way to creating energy-producing clothes.

ENGADGET: Inhabitat's Week in Green: madder root batteries, sun-powered plane and the world's first fiber-optic solar cell

Shopping in Topshop takes energy, verve, enthusiasm and, oftentimes, dogged determination, such is the width and breadth of its offering.

WSJ: Tina Gaudoin on Style: How to Wear Topshop Past 25