Louis Dreyfus Commodities has said that its 53-year-old Swiss billionaire chair is pregnant with twin girls. Margarita Louis-Dreyfus is due in early April and will only take a “brief break” from work, before returning later that month.

The era of falling food prices has come to an end with the world’s population set to rise by 2bn people, according to US farm commodities trader, Cargill Inc.