(The Conversation) – Globally, mothers are having fewer children. Yet despite this latest observed decline in birth rates, the number of twins and triplets being born today is higher than ever before. This is the first time this has ever happened in history – and research is predicting a continued rise in twinning rates. In previous years, twinning rates dropped in line with overall birth rates.

There are many reasons why this may be the case – and social drivers such as older-age pregnancy and greater use of fertility treatments appear to be key factors. (Read More)