https://www.youtube.com/channel/UCqDf3lwZY-MJYKMAw2ySkPQ/

Very well-produced video series on the modern history of Cairo's districts. In Arabic, with English subtitles.

سيرة القاهرة هى مبادرة مجتمعية للحفاظ على تراث العاصمة والتوعية بهِ من خلال الوسائط المتعددة والعمل على إعادة إحياء الأثر وحمايته

Via Colossal and The kids should see this.

This is a nice and useful summary of electrochemical cell potential relationships.
It appears to be part of a larger collection of lectures and slides from Mississippi State University.

Interactive visualisation. With lots of references and background data.

The main metric – annual CO₂ emissions – is sourced from the Global Carbon Project.

Bilder G, Lin J, Neylon C (2020), The Principles of Open Scholarly Infrastructure, https://doi.org/10.24343/C34W2H

First author is Geoffrey Bilder, of Crossref.