Search our database of 1,200+ summaries of randomized evaluations conducted by our affiliates in 97 countries. To browse key policy recommendations from a subset of these evaluations, visit the Policy Publications tab above.

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Creating Incentives to Decrease Water Waste in Zambia

Researchers partnered with a water company in Zambia to evaluate whether improved information and incentives can help households manage their water usage. They found that targeting incentives to higher household water consumers might be an effective way to reduce water consumption.

Are Rainwater Harvesting Techniques Profitable for Small-Scale Farmers? The Adoption and Impact of RWH Techniques in Niger

In Niger, researchers conducted a randomized evaluation to test the impact of providing training and conditional or unconditional cash transfers on farmers’ adoption and use of an environmental technology, their resulting land use, agricultural production and profitability, and labor allocation...

Capacity-building with small and medium enterprises for emissions reductions and firm growth in Türkiye

Researchers are conducting a randomized evaluation to test the impact of emissions reductions-focused loan support to small and medium firms in Türkiye on reducing these firms’ greenhouse gas emissions and protecting firm growth.

The Impact of an Emissions Trading Scheme on Economic Growth and Air Quality in India

In India, researchers evaluated the impact of the first emissions trading scheme for particulate matter on air quality, industry compliance costs, and industry profits. Compliance with the market was high, and participating firms substantially reduced their particulate matter emissions without large...

Providing information on wood heating to decrease indoor air pollution in France

Coralie Chevallier
Elise Huillery
Mathieu Perona
Rita Abdel Sater
Researchers evaluated the impact of general and personalized information regarding the relationship between wood burning and indoor pollution on households’ knowledge of pollution and their pollution mitigation efforts. Both general and personalized information increased households’ awareness of...

The Welfare Effects of Behavioral Energy Conservation in the United States

In the United States, researchers evaluated the social welfare impacts of one very popular nudge to decrease energy consumption—Home Energy Reports (HERs). While they found that the HERs increased social welfare overall, these gains were far less than those reported by previous evaluations that did...

The impact of payments for ecosystem services on crop burning in India

Researchers are conducting a randomized evaluation to test the impact of a PES program that offers financial rewards to paddy farmers for reducing burning of crop residue (or “stubble”) on stubble burning in Punjab, India.

The Impact of Farmer Managed Natural Regeneration and Formalized Land Rights on Reforestation and Crop Yields in Niger

Jules Bayala
Ariel BenYishay
Ibrahim Ouattara
Jessica Wells
Leigh Anne Winowiecki
Researchers are evaluating the impact of Farmer Managed Natural Regeneration and formalized land rights on reforestation and crop yields.