Friday links

1/ Malawi bans farting in public (and who could protest?) (HT:MM)

2/ The African Presidents' Report Card

3/ Cool maps measuring economic growth from space

4/ Kuwaiti gift exchange

5/ So what does a climate economist do?

6/ Apocalyptic warnings about climate change can be counter-productive

7/ The two fuels of the future

8/ Great photos of a Thai Buddhist religious movement

9/ The anti-social network: How facebook makes you sad

10/ Obama's complete State of the Union speech -plus video highlights

11/ Apologies don't always work

12/ Surnames in the US in a map

13/ How language shapes thought