Mexico's Disappeared: "Justice Would Prevail"

Mexico's new president, Andres Manuel Lopez Obrador, has signed a decree creating a truth commission to investigate the disappearance of forty-three students four years ago.

We hear from Botswana's trade minister Bogolo Kenewendo, 30, who is the country's youngest parliamentarian and one of the few women in parliament.

Prehistoric images of hands on cave walls with missing digits could be explained by Stone Age Europeans deliberately amputating their fingers during religious ceremonies.