Africa News Tonight: Famine reported in Darfur, police on high alert as Nigeria protests continue, El Nino fuels crisis in southern Africa

Experts say it appears famine is under way in the North Darfur area of Sudan and starvation is likely occurring in other parts of the country. Police in Nigeria are on red alert as countrywide protests enter day two, following deadly violence in some areas on the first day. The United Nations' climate crisis coordinator and a top World Food Program official are in southern Africa, assessing a drought-driven humanitarian crisis blamed on the El Niño weather phenomenon and climate change.