Restored stream sees return of wild salmon population

Almost everywhere in California, salmon are on the decline. But in Putah Creek—a restored stream running through the University of California, Davis, campus—wild salmon are not only increasing, they are also completing ...

Which tree species fix the most carbon?

Forests provide many ecosystem services, including microclimate regulation, biodiversity preservation, air and water purification, and soil protection. Together with the oceans, they are one of the two most important carbon ...

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