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The flash flood happened around 2:30 p.m. Saturday and resulted in 'significant impacts' to infrastructure throughout Bright Angel Canyon.
The $4.3-billion observatory will aid the search for "Earth twins" and explore the nature of dark matter and dark energy.
The presidential aide spent much of her early life in Southern California, where she was home-schooled and attended a mega-church on Sundays, her brother said.
As France fights wildfires this summer, it looks to California and its experience with fighting or preventing fires.
The four-seat gain Democrats need to win control once seemed all but out of reach. Odds are looking up, though the party still faces a tough path, with toss-up races in a half dozen (mostly red) states.
The Roman Space Telescope, equipped with JPL tech, may shed some light on the greatest mysteries of the universe.
From Australia to India, other countries have also been cracking down on the use of social media by teens.

Over the six months of war with Iran, President Trump consistently attempted to shape the conflict's narrative through shifting and often contradictory statements. His comments have swung wildly from predicting imminent peace to threatening total obliteration of the Islamic Republic.
Autonomous machines have killed humans in recent conflicts, arms experts say.
As increasing numbers of migrants perish during the Trump administration's immigration crackdown, Mexican President Claudia Sheinbaum has vowed to ramp up pressure on U.S. authorities to investigate the deaths.
Meta has agreed to pay $17 billion and add child-safety measures to its Facebook and Instagram platforms to end a landmark trial over teen social media addiction and settle claims filed by 47 states
California wine faces renewed Canadian boycott.
A San Diego County man who allegedly drove around with a guillotine in the back of his truck was arrested near the U.S. Supreme Court building, authorities say.
The new duties will hit a variety of American products with tariffs as high as 50%, including steel, dairy products, appliances and farm equipment.
California officials stressed that the court's ruling does not allow final implementation of the new rules requested by Trump.
Treasury Secretary Scott Bessent described the measures as the opening of an all-out financial assault on the Iranian government and its trade partners.
The state of Nevada is suing to challenge the Trump administration's new plan for dealing with water shortages along the Colorado River.
The contest in Nevada's 2nd Congressional District should be a shoo-in for Republicans. But a problematic candidate, inflation and Trump's unpopularity give Democrats not far-fetched hopes for a massive upset.
Gov. Rubén Rocha Moya of Mexico's Sinaloa state announced Saturday he is once again taking leave — a day after returning to office following a months-long absence after being indicted in the United States on drug-trafficking and other charges.





