IIT's work on BoP.

Now that luxury has gone mass market, how are the super-rich to flaunt their wealth?

As part of Newsnight's Geek Week, business correspondent Paul Mason and presenter Jeremy Paxman broadcast TV's first ever face-to-face studio session from inside the computer game Second Life.

The history of science is replete with discoveries that were considered socially, morally, or emotionally dangerous in their time; the Copernican and Darwinian revolutions are the most obvious.

Renzo Piano, by reputation among the world's greatest architects, tells Emma Brockes why cities have been betrayed