1. Introduction Difference-in-Differences (DiD) is one of the most frequently used methods in impact evaluation studies. Based on a combination of before-after and treatment-control group comparisons, ...

Aspirational values are necessary but not sufficient to address the challenges so aptly captured by the Doomsday Clock.

OpEd: A project called “We Hold These Truths” created a set of principles that people on both sides of political spectrum agree on. Until it comes to their reality.

If you ask a calculator to multiply two numbers, it multiplies two numbers: end of story. It doesn’t matter if you’re doing ...