Several factors help determine whether a given earthquake will generate a dangerous tsunami, but the process is not yet fully understood.
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Authorities have been unable to find the bear that killed a woman near Yellowstone National Park late last month. The attack has renewed calls to take grizzlies off the endangered species list.
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The USGS wants to test if butterflies and other insects are being hurt by contaminants, such as those in pesticides. It's seeking specimens from Alabama, Georgia, Kansas, Nebraska, Oklahoma and Texas.
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Last year, lawmakers approved so-called buffer zones around oil wells.
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It won't be quite as hot for San Diego County inland areas Thursday as stronger onshore flow brings cooling.
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Firefighters recently spotted the spinning columns of flames as they battled the York Fire along the California-Nevada border.
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A California company will pay $1 million for violating federal environmental laws by making and selling devices that defeated smog controls on diesel trucks.
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Dry westerly flow was forecast Wednesday to bring lower humidity to San Diego County this week.
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President Biden Tuesday signed into law a bill to place into trust around 720 acres of land considered sacred to the Pala Band of Mission Indians just weeks after it unanimously passed the U.S. Senate.
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Residents of Grizzly Flats are filing claims for damages against the Forest Service.
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A massive wildfire burning out of control in California’s Mojave National Preserve is spreading rapidly amid erratic winds. Meanwhile, firefighters reported progress Sunday against another major blaze to the southwest that prompted evacuations.
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