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Latest blogs

This new evidence gap map shows what we know – and what we don't know – about food systems interventions

Right now, 690 million people are undernourished and at least 650 million people are obese. Given these staggering statistics, it is imperative that we use the best available evidence to improve nutrition and food security across the globe.

Despite the hype, do not expect big data to replace traditional surveys anytime soon

The COVID-19 pandemic has created new hype around the potential for new, ‘big’, data sources to revolutionize data collection, and change the landscape of evidence for policy. Non-traditional data sources - like satellite imagery, call detail records, and social media posts—do offer exciting opportunities to track and understand processes on Earth across space and time like never possible before.

Big Data in the time of a pandemic

With a significant number of active cases globally, the novel coronavirus represents an extreme public health challenge. The outbreak of the pandemic has led to stringent travel restrictions, making data collection a highly challenging task for the development research community.

2020 Hindsight: A year of what the evidence has taught us

A little less than a year ago, at the start of what has become an infamous year, we launched a yearlong social media campaign called ‘2020 Hindsight: What Works in Development.’

Farmer Field Schools can improve yields, raise incomes, and reduce pesticide use

Interventions that raise agricultural productivity in poor regions have the potential to offer two benefits at once: increasing the food supply and providing income for farmers, who make up a majority of the world's poor.

Evidence Dialogue: Small nudges can help farmers adopt new technologies

These insights came from panelists on Thursday's 3ie Evidence Dialogue webinar, which brought together the lead researchers from three 3ie-supported impact evaluations on agricultural innovations.

World Toilet Day: building latrines is not always enough to get people to use them

Today, on World Toilet Day, the UN counts 4.2 billion people as being without access to safely managed sanitation. Many of them were in India until the national sanitation drive, the Swachh Bharat Mission (SBM), made massive strides in reducing the number.

Subsidized seeds and fertilizer lead to higher agricultural yields and incomes

A majority of the world's poor live in rural areas and work in agriculture, according to the World Bank. Furthermore, hundreds of millions of people, including some of those same farmers, do not have enough nutritious food to eat.

Evidence shows modest gains in income and educational outcomes as a result of greater electricity access

The importance of electricity for poverty reduction is highlighted in the seventh Sustainable Development Goal: Ensure access to affordable, reliable, sustainable and modern energy for all.

Women's empowerment requires more than just economic resources

Although women's economic empowerment has received increased attention from policymakers in the last decade, progress remains frustratingly slow. Gaps in wages, education, autonomy, and social status remain.


Evidence Matters is 3ie’s blog. It primarily features contributions from staff and board members. Guest blogs are by invitation.

3ie publishes blogs in the form received from the authors. Any errors or omissions are the sole responsibility of the authors. Views expressed are their own and do not represent the opinions of 3ie, its board of commissioners or supporters.