Madagascar votes in run-off election

Two ex-presidents, Marc Ravalomanana and Andry Rajoelina, face off in Madagascar’s elections. A former defence chief in Nigeria has been killed in an ambush outside the capital, Abuja. And two award-winning Kenyan scientists discuss their work, funding and inspiration.

(Photo: A Malagasy Independent Electoral Commission officers starts the counting operation during the presidential election on December 19, 2018 in Antananarivo, Madagascar. Credit: AFP/Getty Images)