Cow manure digesters really do cut methane—unless they leak

A new study shows that systems designed to capture methane from cow manure, called dairy digesters, are highly effective. But on the rare occasions they fail, the leaks are large enough to offset their climate benefits.

Circular economies should work for communities, not against them

The circular economy concept is often thought of as a model to eliminate waste and pollution—but when applied thoughtfully, circular approaches can create jobs, strengthen local economies, improve public health and more, ...

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