What’s the most humane way to kill lab animals? Some researchers are concerned that current methods are not the least painful and least stressful options. The most widely used method of killing rats, for instance, is with CO2, a method that studies suggest is stressful to rodents.
Monthly Issue
April 2026
The Energy Transition
In this monthly issue, we examine how our understanding of energy — and how we source and use it — is evolving.
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11 articles
