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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Hand holds up infrared sensor in front of house

Reducing Energy Consumption and Greenhouse Gas Emissions through Energy Efficient Retrofits: Evidence from Low-Income Households

Meredith Fowlie
Michael Greenstone
Catherine Wolfram
Researchers evaluated the impact of a residential energy efficiency program on energy savings and carbon emissions in the United States. They found that energy savings equaled only about half of the upfront cost of the program, which were far less than projected.

Rates of Return to Fertilizer: Evidence from Field Experiments in Kenya

Esther Duflo
Michael Kremer
Jonathan Robinson
Researchers in Kenya collaborated with the NGO International Child Support to measure the returns to different types of fertilizer among local farmers. While results show that all interventions led to increases in yield, rate-of-return calculations indicate that not all were profitable for the...
A man is looking out over the land in Kenya.

Nudging Farmers to Use Fertilizer: Experimental Evidence from Kenya

Esther Duflo
Michael Kremer
Jonathan Robinson