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The colors of an autumn afternoon can be serene, brilliant and breathtaking.“As the days start getting shorter and the nights get longer, that's the cue that the trees get to change the foliage,” said climate scientist Astrid Caldas.That foliage requires a delicate dance of temperature and moisture to produce fall colors. It’s a dance potentially now in jeopardy due to climate change.“Because these things -- temperature and precipitation, rainfall -- are being affected, changed by climate, then the fall foliage can really get affected,” said Caldas, who is a senior climate scientist at the Union of Concerned Scientists, a nonprofit science organization.She said long-term shifting temperature trends and more rain will be disruptive to fall foliage in certain parts of the country.“We are seeing extreme precipitation increase, particularly in the Northeast and the Midwest,” Caldas said.That precipitation was evident in Minnesota, where people found themselves caught off-guard this year by an unusually early snowfall."I had to completely disassemble my fall leaf clean-up box and make sure my plow is still working,” said Greg Futchi, who is a landscape contractor. “We usually get all the leaves down before we see some snow, but not this year."All of that added moisture can lead to a shorter fall foliage season, Caldas said. Yet, repeated and ongoing droughts, like those seen in the western U.S., also bring their own set of problems to autumn leaves.“When it’s very dry, the colors get a little more muted also,” Caldas said. “So, drought can really kind of change completely the setup.”Scientists add that climate change isn’t just going to affect the ways leaves change their colors during the fall. It’s also going to potentially affect where those trees grow in the first place.“When the conditions start changing --like it's starting to get warmer further and further north--well, that's also a possibility that species are going to start migrating farther north,” Caldas said. “So, as different trees start moving to different areas, then the colors may change because the color depends on the tree.”That may mean having to travel farther north to see stunning red maples. It is a change that will be hard to stop unless action is taken on a global scale.“In the long run, if the countries and the whole world is not committed to really reducing emissions and changing to renewables and making that complete change, then it's going to be very hard for us not to see very drastic changes, because small changes are already happening,” Caldas said.Those changes are now encroaching on a time-honored spectacle, courtesy of Mother Nature. 2667

The Democratic-controlled House has approved a wide-ranging defense policy bill, even as President Donald Trump renewed his threat to veto the bill unless lawmakers clamp down on social media companies he claims were biased against him during the election. Trump tweeted Tuesday he will veto “the very weak National Defense Authorization Act,″ or NDAA, unless it repeals so-called Section 230, a part of the communications code that shields Twitter, Facebook and other tech giants from content liability. Trump also wants Congress to strip out a provision of the defense bill that allows renaming of military bases that now honor Confederate leaders. The defense bill now goes to the Senate. 699

The Florida House on Wednesday passed legislation that would impose new restrictions on firearm sales and allow some teachers and staff to carry guns in school.The Marjory Stoneman Douglas High School Public Safety Act was spurred by the February 14 shooting in Parkland, Florida. The bill, which passed 67-50, now goes to Gov. Rick Scott. He has 15 days to sign it.Earlier in the day, Scott expressed reservations about the provision to arm school personnel. He vowed to review the bill "line by line" before signing it."The group that I'm going to be talking to -- the groups that I care most about right now because it impacted them so much -- is the families," Scott said.Speaking on behalf of the 17 families who lost loved ones in the shooting, Andrew Pollack, whose daughter was killed, urged Scott to sign the bill."We stand united in asking him to sign this historic bill into law," he said after the bill's passage."We thank the House and Senate for voting in favor of protecting our children, but more needs to be done and it's important for the country to unite in the same way the 17 families united in support of this bill."Scott also concerned about waiting period 1187

The election is days away, and ballots across the country are already being cast in person, via mail. Billed as one of the most important elections of our time, ABC 10News D.C. Correspondent Joe St. George joins us to talk about the presidential election, what to watch for in Thursday's dueling town halls, and to explain how Nevada and Arizona could play a major role in deciding our next president.You can join us at 9:30 a.m. for the conversation right here on our ABC 10News Facebook page. 502

The Cincinnati-area airport took a child’s beloved stuffed animal for an impromptu tour, reaching many on social media, before uniting the toy Dalmatian with its family in Florida. Staff at the Cincinnati/Northern Kentucky International Airport were sending the toy back to Florida on Friday. Spokesperson Mindy Kershner says the airport’s Facebook posts about the missing plaything reached 1 million people. Airport employees found the toy left behind in the terminal and snapped photos of the lost traveler outfitted in a mask at the airport’s restaurants, on the runway and with a K9 team. 600