Architects in Sydney, Australia have found a way to light up a part of the city that was once perpetually dark, hidden from the sun by tall buildings. They've done it by capturing the sunshine, and bouncing it between buildings with an architectural device called a heliostat. Lester Ranby reports.
Kate vs Pippa Middleton: Style Battle. Duchess of Cambridge Kate Middleton takes on her sister, Pippa, in a royal style battle. Who'll come out on top: the Princess or "Her Royal Hotness"?!