These are my links for May 21st 2012 from 11:18 to 18:55:

• Serendipitor: the mapping app that leads you astray (Wired UK) – "Computerised directions are all about getting you where you need to be in the most efficient way possible," Shepard explains. "It's the engineer's approach — just keep optimising. But why aren't we asking these systems to make our journeys more enjoyable, or more interesting? Devices are always giving us instructions — telling us what to do. What happens if they give you instructions which are impossible?" Or unwise.
• Arctic Opening: Opportunity and Risk in the High North | Chatham House: Independent thinking on international affairs –
• BBC Nature – Whales can adjust their hearing –