The Guardian's health editor Sarah Boseley met former US president Bill Clinton in Rema, a hilltop village in northern Ethiopia.
It is the country's first solar-powered village with all 1100 mud huts fitted with a long-lasting electric light. Clinton believes this is the way to go and that it is even ahead of the US in looking at future energy needs.
He discusses Africa and why he thinks the continent has great potential; climate change and his frustration that president Bush removed the US from the Kyoto protocol; bikes in Paris and Denmark's energy solutions; circumcision, HIV and AIDS; why the US government needs to distance itself from the drug companies; plus Hillary, Chelsea, Obama and the presidential campaign.
He also discusses how the Guardian's sudoku puzzle helps with his jet lag.
