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.

Technology adoption often requires investments over time.  As farmers realize new information about the costs and benefits of investments, they may abandon the newly adopted technology shortly...

Demand for nontraditional cookstoves in Bangladesh is very low.