Liquid networks.

Steven Johnson on liquid networks - from London's coffee houses to Darwin's long, slow hunch to today's high velocity web - at TEDGlobal Oxford July 2010.

I particularly like the neonatal incubator made essentially from Toyota Landcruiser parts, as sustainable technology for emerging markets.

At 18 minutes long you might want to get yourself a coffee to feel at home.

Cumulative evolution and why nobody knows how to make a pencil.

Inspiring thoughts from Matt Ridley at TEDGlobal 2010 Oxford earlier this month, showing how human progress is driven by the meeting and mating of ideas and why nobody knows how to make a pencil.