Oprah Winfrey's last show airs today, not just in the US, but in more than 150 other countries. Her global influence is massive. The World's Alex Gallafent reports that there are now scores of copycat shows around the world.
For today's Geo Quiz we are looking for a city located in between the cities of Kampala and Mombasa. Host Katy Clark takes us to the backyard of an ambitious engineer in this city who has built his own aircraft.
Safari tourism in Africa is changing. Tracking down big game is still central, but more and more tourists are also involved with conservation and helping local communities. Correspondent Jake Warga reports.
The answer to today's Geoquiz is Nairobi, Kenya, where cell phone users are chatting up a storm following a drastic drop in cell phone rates. Anchor Marco Werman finds out more from the BBC's Josphat Makori.
Secretary of State Hillary Clinton's 11-day trip to Africa begins with a focus on Somalia, though she won't actually be visiting the war-ravaged nation. Anchor Marco Werman speaks with the BBC's East Africa correspondent Peter Greste in Nairobi.