Of the developing world. us tech firm uber has partnered with the united nations world food programme to help it deliver emergency food and water supplies in war—torn cities of ukraine. it's built the organisation a free version of the software it uses to co—ordinate its own delivery services — and it's being trialled in the city of dnipro. the bbc�*s technology editor, zoe kleinman, reports. in some parts of ukraine, it's getting harder and harder to access food and water. but in a war zone, big delivery trucks can also be big targets. so now, the united nations world food programme i...