Category: Illustrated

A visual guide to critical materials and rare earths

Allow me to share this very nice visual guide to critical materials and rare earths made by The Economist: https://www.economist.com/graphic-detail/2025/03/24/a-visual-guide-to-critical-materials-and-rare-earths They did a fantastic job and provide the…

Critical Minerals Data Explorer

In a recent publication in Energy Economics, we found that geopolitical risk will drive up the price of several critical minerals, especially during episodes of heightened geopolitical tensions.…

Heterogeneous Difference-in-Differences with Stata (Again)

Yesterday, Stata released two videos on how to use Difference-in-Differences commands built-in within Stata. The videos are very pedagogical, so allow me to share them with you: Treatment…

Explaining the Infrastructure Vulnerability Score for the Russia Federation

After a first blog on how to visualize the ND-GAIN vulnerability scores, I was keen to explore the sub-categories of the vulnerability scores. Among them, I was particularly…

Illustrating the sample variance bias with R and Mathematica

In my previous blog, I recall that we can demonstrate in a few steps that the sample variance is an unbiased estimator of the population variance when we…