Satellites picked up a blue-green shift over 20 years. Tiny pieces of plastic could help explain it.

Also, three friends escaped after rising tides trapped the group at Panther State Beach, but 24-year-old Senah Park remains missing.

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A surge of colder air will set the stage for a potential first snowfall across portions of the Great Lakes and Northeast late week.

Also, a series of potent storms with atmospheric rivers will blast British Columbia and part of the northwestern United States into this weekend before colder air forces the storm track much farther south.

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With hungry bears ranging farther for food in drought-stricken Colorado, a wildlife center near Silt is feeding 32 cubs ahead of winter.

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Record river flooding prompts evacuations in McCaysville, Georgia, as crews conduct boat and aerial rescues.

Also, a wet weekend is on tap for South Texas as heavy rain and thunderstorms spread across the region, raising the risk of flash flooding from near San Antonio to Corpus Christi.

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The minimum flow over Niagara Falls has dropped from roughly 748,000 gallons every second to 374,000 as more water is diverted for hydroelectric power.

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Rain will end a weeks-long dry spell in the Northeast Wednesday night and Thursday, bringing slick roads and a risk of localized flooding before gusty winds usher in cooler weather.

Also, ticks become active again in fall and can seek hosts on warmer winter days. Raking leaves, hiking and hunting can put people in their path.

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With some reservoirs nearly full and a potentially wet winter ahead, California faces a tricky challenge: preventing floods while saving as much water as possible for the next drought.

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Despite a major disruption in the polar vortex that typically releases Arctic air, no frigid air outbreaks are coming to the United States in November. Some areas will trend cooler and especially wetter, however.

Also, Arizona agriculture officials have announced the state's first case of New World screwworm, making it the third U.S. state to report a case of the flesh-eating parasite amid the ongoing outbreak.

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El Niño could bring a much better ski season to parts of the West, while prolonged warmth and less reliable snow may create tougher conditions for resorts across the Midwest and East.

Also, ED138 is currently about 46 times farther from the sun than Earth. Scientists say it is among the largest objects discovered beyond Neptune.

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Rain could worsen cracks beneath the coastal highway as crews work around tides and waves to protect a vital route.

Also, the NYC Marathon is Sunday. 59,000+ runners will participate and the weather is looking really nice for the race.

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Tropical moisture could fuel heavy Halloween weekend rain and renewed flash flooding across the Southwest. Southern California’s flood risk hinges on how quickly storms and a Pineapple Express come together.

Also, a wet Halloween may dampen some spooky spirits across the United States this year, while a chill may force others to bundle up for trick-or-treating.

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