Environmental issues such as deforestation, climate change, and indoor and outdoor air pollution are considered to have a disproportionate effect on the world's poorest people. IPA's evaluations on this topic have included research on land conservation, recycling, the reduction of plastic bag waste, and the use of cook stoves to reduce indoor air pollution and fuelwood use.

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Many climate change programs that target small-scale farmers seek to change farmers’ agricultural practices, whether to sequester additional carbon or to improve climate resiliency.

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Researchers worked with PRISMA to test a series of information messages aiming to improve take-up and participation its recycling program

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Demand for nontraditional cookstoves in Bangladesh is very low.