Where we live has a huge impact on many aspects of life, so understanding more about where you live and your local area is very useful for research. For example, research on a similar study of children born in the early 2000s has shown that exposure to air pollution may be linked to children doing less well on average on some cognitive development tasks, which has helped highlight the importance of improving air quality, including close to schools and children’s playgrounds. Researchers will also be able to look at things like whether living close to parks and other green spaces has an impact on health and well-being.