Voting is taking place in Mexico in an election which is almost certain to result in the country's first female president. More than twenty candidates have been killed in what is now the most violent election in modern Mexican history.

Also in the programme: scientists in Britain have developed a blood test that could forecast the return of breast cancer years before tumours show up in scans; and will the T20 Cricket World Cup help the sport compete with more established sports in the United States.

(A woman shows her inked thumb after voting at a polling station during general elections, in Comachuen, Mexico on June 2, 2024. Credit: Ivan Arias/Reuters)