Policy

The answer is not as simple as replacing each nine-digit number with a longer one

The plan includes vaccine mandates for federal workers and those at companies with 100 or more employees, but some experts say it doesn’t go far enough

Training science writers for a future of solutions

Unfortunately, its strongest proponent was, which tainted its reception

Letters to the editor from the May 2021 issue of Scientific American

Top news from around the world

Emergency management leaves out vulnerable groups and is poorly prepared for worsening climate-related disasters

U.S. could go metric; vicious fish

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A simple traffic light symbol or a set of stars on the fronts of food products would advise consumers

Schools, colleges and universities that fail to impose mask mandates and other COVID protections put working parents in an excruciating position

Global warming is setting free carbon from life buried long ago in the Arctic’s frozen soils, but its impact on the climate crisis is unclear