Newsletter · Sep 17, 2026

Economy
When the oldest Baby Boomers turned 45, in 1991, their generation held 20.9% of all US household wealth. When the oldest Millennials turned 45, in 2026, theirs held 11.0%.

Climate
From 2007 to 2021 the United States added 19 terawatt-hours of annual electricity demand — half a percent in fourteen years. Since 2021 it has added 343, more than Britain uses in a year.

Demographics
In 1960 about a third of humanity lived in towns and cities. In 2007 the share passed half for the first time, and it is now 58%. It is a threshold our species crosses only once.
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