Scientists have long relied on tree rings to learn about ancient solar storms—rare bursts of high-energy particles from the ...
Weather patterns like heat waves or dry spells can sometimes stall over one region. A new University of Arizona study found clues about why. The researchers analyzed tree rings from centuries-old ...
The San Joaquin River watershed is amid its third consecutive year of below-normal precipitation. But three dry years are merely a drop in the bucket (pardon the pun) compared to a historical record ...
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