Polling Stations Open in Nigeria

After a week's postponement, more than 100,000 polling stations are opening across Nigeria for the country's presidential election.

Also, should the Chinese firm Huawei be allowed to work on the latest tech projects in the West?

And the plans to regulate testosterone levels in women's athletics which could change the whole nature of female sport.

Joining Julian Worricker to discuss these and other issues are Myriam Francois, Franco-British writer, journalist and film-maker based in London and Sir Venki Ramakrishnan, American-British molecular biologist born in India.

(Image: Election officials prepare for the start of voting in at a polling station in Katsina State, Nigeria. Credit: Reuters)