Closing the Loop
Stephen SchiffExplorations on topics pertaining mostly to the climate, energy and nuclear weapons, with occasional forays into other topics, sharing the learning experience of a physicist.
| Platform |  | Pricing | Freemium | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 123 | Founded | 3 years ago | Last Issue | 7 days ago |
| Active | |||||
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stephenschiff.substack.comLatest Issues
Paris Postcards
Only a little politics
Social media have been outlawed in France, starting in September, for children under the age of 15, and several other countries in the civilized world appear to be considering such measures. This I think is a good th...
Measurable costs of data centers
Loudoun County Virginia: How’d you like to live here? Nathan Howard/Getty Images photo [1]
Because of all the hype about so-called Artificial General Intelligence and Large Language Models I wanted to call attention to its adverse effects...
Chornobyl 40 years on
Today, April 28, 2026, marks the fortieth anniversary of one of the world’s greatest nuclear disasters, the accident at the Chornobyl reactor complex near Pripyat, on the Kyiv reservoir in Ukraine. It is especially worth remembering because...
20,000 Teddy Bears
Each of the little teddy bears on this fence represents a Ukrainian child abducted by Putin. S. Schiff photo
Today the adult members of this family had the honor of helping to erect an installation on the National Mall, nearly in the shado...
China and nuclear weapons testing
Imagine for a moment that you are a parent whose child returns home escorted by the owner of a local store, who explains to you that little Johnny was caught stealing a candy bar. When questioned, Johnny admits he did it, but says he did so...
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