Sign up for our free weekly newsletter and understand everything better!
The Xerces blue, long gone from San Francisco, became a symbol of the fight against extinctions. Now scientists are sending in a replacement to the dunes of the Presidio. Will it take?
Dos Rios Ranch State Park, in the Central Valley, is a test of California’s ability to adapt to the future—and learn from the past.
Big environmental dreams—and disasters—have created demand. Now it’s time to worry about supply.
To find slime molds, look for the damp places. Your quarry will be visible to the naked eye when it joins forces by the thousands to coalesce into blobby shapes—like undercooked pancakes, left on logs at Tilden Park, or a lattice of high-gloss mustard, in the hills near Mount Tam.
