Tickling

The world's first 'tickling spa' has opened in Madrid. Instead of getting a facial or a manicure, a massage therapist comes in and starts tickling you! Dr Chris Smith is a keen tickler and one of the Naked Scientists. We ask him some ticklish questions.

Tracking drug users with GPS

Helping recovering drug addicts in Baltimore with GPS units and electronic diaries. It's all part of an emerging discipline called behavioural geography, which looks at how physical places shape our behaviour. David H. Epstein of the National Institute on Drug Abuse.

Angry Birds

Angry Birds is the game that's had over 250 million downloads with 40 million active users every month. Mark Cubey's a fan and I'll ask him why such a seemingly obscure and trivial game has become such a massive success.

TR-10 emerging technologies

Jason Pontin, the editor-in-chief of the Technology Review, starts picking out 10 emerging technologies he thinks are most likely to shape the future and change our world.

Secret History of Social Networking (Part 2)

BBC technology correspondent Rory Cellan-Jones presents episode two of The Secret History of Social Networking. This week, the rise of Facebook; what made it so darn popular, and why did competitors like Bebo and My Space largely fall off the radar?

Scrabble words

Two official bibles of the world of Scrabble- updated and definitive lists of each and every word you can play- have just come out. There's nearly 3000 new words - from Facebook to wagyu - but still no room for 'jandals'! Robert Groves is editor of 'Collins Official Scrabble Words' and 'Official Scrabble Lists'.