The biggest public health challenge is rebuilding health systems. In other words if you look at cholera or maternal mortality or tuberculosis in Haiti they're major problems in Haiti but the biggest problem is rebuilding systems.
I want to start my own airplane business. I'm going to buy two Dakotas paint them up in war colours and do er nostalgia trips to Arnhem - you know where the old paratroopers used to go - and charge them about 20 quid a time.