Source: https://www.curtin.edu.au/news/media-release/born-too-late-climate-change-may-be-delaying-births/

New Curtin University research has found exposure to outdoor air pollution and extreme temperatures during pregnancy may increase the risk of prolonged pregnancy, offering new insights into the impact of climate change on maternal health.

The study analysed data from nearly 400,000 births in Western Australia and found that higher exposure to fine particulate air pollution (PM2.5) and biothermal stress (a measure that combines air temperature, radiant temperature, relative humidity, wind speed, and human physiology) was associated with pregnancies lasting beyond 41 weeks.