Why do we donate to certain causes and not others?

The World

The Notre Dame saw pledges of millions of euros in just the couple of days since the cathedral caught fire. Meanwhile, the southeastern African countries affected by Cyclone Idai last month are still reeling from the devastation. The United Nations appealed for an emergency fund to raise $282 million over the course of three months. Host Marco Werman speaks with Michael Sanders, a behavioral researcher in the UK who's written about the science behind what makes us donate.

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