World-renowned physicist Stephen Hawking, who has died at the age of 76, completely changed the way we think about the universe. Despite suffering from motor neurone disease from a young age, he made significant scientific breakthroughs and brought the world of cosmology to millions of non-scientists. Martin Rees, a colleague and the UK’s Astronomer Royal, looks back at Hawking’s extraordinary life while a range of academics pay tribute to a remarkable man.

A South African food business, Tiger Brands, has been fingered as the culprit in the listeriosis outbreak that’s engulfed the country. Ilse Struweg argues that the company has performed poorly in managing the crisis and sets out what it needs to do to try and repair some of the damage.