Liberia earmarks the last doses of an experimental drug for two doctors suffering from Ebola. This as doctors warn the WHO's decision to greenlight untested treatments is still fraught with ethical pitfalls as doses are in short supply. UN envoys in South Sudan say they're not optimistic about the country's warring leaders finding a compromise to end the violence any time soon. And conservationists warn that Uganda's reliance on wood charcoal is burning a hole through the country's forests.