US election conversations: Undecided voters

As the US Presidential election approaches, we hear from undecided voters - a group that could make the key difference in this tightly fought election.

Also, we bring you the latest from the French city of Nice, where three people have been killed in a knife attack. France has raised its national security alert system to its highest level and President Emmanuel Macron denounced the "Islamist terrorist attack".

And every day we invite a medical expert to help us understand the latest news about coronavirus and to answer audience questions. Today, we will be joined by Dr Emma Hodcroft, a molecular epidemiologist at the University of Basel in Switzerland.

(Photo: Gordon Kou. Credit: Gordon Kou)