The UN Population Fund (UNFPA) lists population ageing as one of the world’s mega trends, all of which combine to demand a reconsideration and re-conceptualisation of the main challenges in the post-2015 development agenda. While some countries are still dealing with high population growth, many have moved onto a new set of challenges as a result of slowed, or possibly declining, population growth. The UNFPA points out that while most concerns about ageing are similar around the world, few people rank them very highly in terms of the world’s priorities. Much work is needed, however, to prepare states for the considerable structural changes needed to support these ageing populations. For a start, age discrimination must be eliminated so that “people of all ages are able to contribute to society.” And, special support measures are needed for older women because a disproportionate number of people over the age of 60 are women. The UNFPA report is available here.