This study took place at a primary school in London, where 10 children and their parents measured the air pollution they breathed on the way to and from school. The children then shared their results with about 400 schoolmates. The researchers wanted to know how collecting and seeing their own air pollution data affected how children, parents and the school thought about and responded to air quality.

This article describes a 10-week after-school internship for high school students in Imperial County, California, an area with poor air quality. Students learned about local air, health and a community air monitoring network, and then shared what they learned with their community and with lawmakers. The researchers set out to see whether the program built students' understanding of air and health and their skills as leaders.

This study compared three ways of teaching high school students in Jakarta, Indonesia, about microplastics, the tiny plastic pieces now found in water, food and air. The researchers wanted to know which approach did most to improve students' knowledge of microplastics and their attitudes toward them: a lecture, discussions led by fellow students, or posters and digital infographics.

This systematic review looks at educational toolkits designed to help people reduce harmful exposures in their environment, such as strong sun or chemicals at home. The authors wanted to know what these toolkits commonly include and how researchers measure whether they work. They drew on 17 trials run in schools, homes, workplaces, clinics and other community settings.

This chapter describes Gardenroots, a citizen science project with home gardeners in Dewey-Humboldt, Arizona. The town sits next to a former mine and smelter site with arsenic pollution. Residents and university scientists worked together to find out how much arsenic was in local garden soil, water and vegetables. The authors set out how they built the partnership and what it led to for the community.

This article looks at how Italian researchers share health findings with communities living near polluted industrial sites, such as old asbestos plants, refineries and steelworks. The authors draw on a national health tracking program and on studies in individual towns. They explore how two-way communication and local partnerships can help residents and officials understand environmental health risks and act to reduce them.