Four words for all you naysayers: it can cure AIDS.

A very unusual blood transplant appears to have cured an American man living in Berlin of infection with the AIDS virus. He had a blood stem cell transplant in 2007 to treat leukaemia, and his donor not only was a good blood match but also had a gene mutation that confers natural resistance to HIV. If we can get our hands on the mutation, then this would be, as some rather unsavoury German guy put it, the final solution to the AIDS question. Medical science will always have "only come so far", but it will come further as time goes by. Just as there is hope that North Korea will reunite with the South, there is hope that a similar mutation can be found to cure cancer as well. And there is hope that Qatar can overcome all their obstacles to hosting a successful World Cup by 2022.