Rwanda's deadly methane lake becomes source of future power

Karongi, Rwanda: Beneath the calm waters of Lake Kivu lie vast but deadly reserves of methane and carbon dioxide, which Rwanda is tapping both to save lives and provide a lucrative power source.

Plans are in place to pump out enough gas for power that would nearly double Rwanda's current electricity capacity, as well as reducing the chance of what experts warn could be a potentially "catastrophic" natural disaster.