Weak Kariba Dam walls threaten Zambia's energy security

Even with oil prices dropping, Africa is still looking for new and alternative sources of energy.

The Kariba Dam, on the border between Zambia and Zimbabwe, is a long-standing hydro-electric project - but there now appear to be cracks in the dam's walls that could be catastrophic.

The BBC's Lucy Burton has been finding out what the situation at Lake Kariba could mean for hydro-energy in Africa.

Watch Africa Business Report.