Alex Maitland takes us through the number-crunching behind the headline prediction from this year’s Davos report: that there will be five trillionaires within a decade.

One of the things I do on this blog is float random ideas for how the aid sector could do things differently. I’m under no illusions that anyone is actually listening. The best I can hope for is usually that a couple of people express mild interest in an idea, before it floats off into the abyss to join all

I met Walter Flores at a Twaweza seminar in Tanzania a couple of months ago, but have only just got round to reading his fascinating paper reflecting on 10 years of trying to improve Public Health in Guatemala. It is short (12 pages), snappily written, with a very crisp, hard-hitting thesis, so no need to do more than provide some