Reuters: Some Rwandans tell stories of "demons" in Lake Kivu causing the deaths of fishermen and swimmers who have occasionally disappeared on one of Africa's great expanses of water in the heart of the continent.
Now Rwanda is turning the methane gas which can bubble up from the lake bed, sometimes with fatal consequences, into a lifeline by generating electricity to help businesses expand and light up a nation with a chronic power shortage.
Across Africa, governments are struggling to increase power...