So many of the ways in which women and girls around the world must live their lives are simply taken for granted, never given a second thought.
We all know that domestic tasks fall disproportionately on women. That is as true in the UK as it is in a rural African village or a Darfuri refugee camp.
We also know that round the world there is energy poverty – people do not have the basic energy needs for their daily lives. But do we realise how this disproportionately affects women and girls?
In this crucial year, when the international community will agree a new set of Sustainable Development Goals and a climate deal will be reached in Paris, maybe we should think harder.
An estimated 1.3 billion people worldwide have no access to electricity, and 2.8 billion rely on solid fuels for cooking and heating. And it is girls and women who bear the brunt of this energy poverty.
The full blog is here