A solution for refugee suffering: Give them cash
Is cash a better way to help refugees than food aid? A million debit cards have been given to Syrian refugees in Lebanon, loaded up with cash each month by UN agencies such as the UNHCR and by charities - and the scheme is now expanding.
Video journalist: David Fuller. This is a report from BBC World Hacks - a new BBC World Service programme focussed on solutions, or hacks, to global problems.