What does the Yosemite National Park forest have in common with the Amazon rainforest? A food supply from a far-off place.
During California’s rainy season, climate scientists say, dust from as far away as the Gobi Desert in Asia is carried by the global jet stream and deposited on top of Yosemite’s granite bedrock, where microscopic material within the dust feeds the vast forests of the Sierra.
The process has been going on for hundreds of thousands of years, but not until recently did scientists aim to understand the impact of that relationship in the Sierra Nevada.
Dust plumes blow out of the Gobi Desert, with dust spreading over large swaths of eastern China and...