California | Science

The Gold Rush Returns to California

ON THE OUTSKIRTS of the northern California town of Grass Valley, a massive concrete silo looms over the weeds and crumbling pavement. Nearby, unseen, a mine shaft drops 3,400 feet into the earth. These are the remains of Grass Valley’s Idaho-Maryland Mine, a relic from the town’s gold mining past. Numerous mines like this one once […]

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To Save the Redwoods, Scientists Debate Burning and Logging

MILLIONS OF PEOPLE travel to California’s redwood forests every year to marvel at the few remaining stands of old-growth trees. Sequoia sempervirens, or the coast redwood, thrives in the damp climate along the Pacific Ocean. Some are more than 2,000 years old, and the tallest can reach 380 feet. The state is also home to a second […]

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