Worshippers have been gunned down in mosques and homes have been torched in escalating violence, Human Rights Watch says.

A raid on a Johannesburg factory found 91 Malawians, including 37 children, living in appalling conditions.

Kyalo Mbobu was driving home when a gunman on a motorbike shot him dead on a busy street in the capital.

The UN says the number of obese teenagers has nearly tripled globally in the last two decades.