Some non-native species are okay. But not all of them.
Do badgers hibernate during the winter? And if not, when *do* they emerge from their burrows? Guest naturalist Susan Kirks answers.
A dam retrofit project reveals a treasure trove from the time when California had a vast inland sea.
Why would a scientist count a quarter of a million redwood tree rings?
Opinion: The American democratic experiment and the survival of the planet may depend on overcoming our fear of foreigners
Naturalist’s Notebook: Good Algae Gone Bad
Blue-green algae has made some Bay Area ponds dangerous