Inside Hack Day #2 at the Guardian.

(From Guardian Unlimited)

The Guardian's second Hack Day challenge resulted in 45 amazing projects. People created whatever they could in 24 hours and queued up to show their work in 90 second demos.

This highlight reel shows a handful of the presentations given on the day:

If you want to know more about what people built, The Guardian's own Kevin Anderson captured many of the ideas in his thorough coverage of the day:What happened at the second Guardian hack day Guardian Hack Day 2: And the winner is... Guardian Hack Day 2: Alerting journalists to comments Guardian Hack Day 2: Carbon efficiency of economic output Guardian Hack Day 2: Automating making …