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Snapchat can't catch a break.Shares of the social media company plunged Wednesday after it changed its app again — only months after a previous redesign that ticked off users.Snap stock was down 7% in midday trading, putting it more than 15% below the price when it went public last year.Last year, Snapchat changed the app to differentiate between a user's personal friends and media superstars that a user follows. Many fans revolted. So did Wall Street.The latest changes appear to backtrack. On the same Discover page, some users now see a test that shows Stories from their friends as well as posts from celebrities and other "influencers" that they subscribe to."We are always listening to our community and will continue to test updates that we hope will give Snapchatters the best possible experience on our platform," a Snapchat spokesperson told CNNMoney in response to a question about the changes.Celebrities aren't pleased with Snap lately, either.Kylie Jenner bashed Snapchat in February. Her tweet criticizing the redesign — she called it "so sad" — caused the stock to tank. Jenner later took a literal baby step back toward Snapchat, posting videos of her infant daughter, Stormi, to the platform.)Related: The Kylie Jenner curse? Snapchat faces its defining momentAnd just last month, Rihanna attacked the company after an ad on Snapchat made light of a 2009 incident in which Rihanna's former boyfriend Chris Brown was arrested. He later pleaded guilty to beating her during an argument.The constant rejiggering of Snapchat has clearly annoyed lots of users, though, not just famous people. It's making investors nervous, too. And it couldn't happen at a worse time for the company.It's still not clear that Snapchat will ever be able to be profitable enough to live up to the hype before it went public. Snapchat rallied after its last "earnings" report, but investors still worry about slow user growth.In many respects, Snapchat's challenges are similar to those of Twitter — a company that never can seem to satisfy Wall Street. Twitter stock fell Wednesday even though the company reported revenue and profit that topped forecasts.Concerns about privacy for social media users have reached new heights since the Facebook/Cambridge Analytica data scandal.Of course, Facebook also owns Snapchat's fiercest rival, Instagram. Many investors worry that Snapchat won't ever top Instagram's user count, especially if Instagram keeps rolling out features similar to Snapchat's.Facebook will report its latest earnings, including Instagram user numbers, after the market closes Wednesday.— CNNMoney's Kaya Yurieff contributed to this story. The-CNN-Wire 2676

Senate Judiciary Chairman Chuck Grassley on Thursday referred Julie Swetnick and her lawyer Michael Avenatti to the Department of Justice for a possible criminal investigation over allegations they made false statements to Congress about now-Supreme Court Justice Brett Kavanaugh."I am writing to refer Mr. Michael Avenatti and Ms. Julie Swetnick for investigation," Grassley wrote in a letter to Attorney General Jeff Sessions and FBI Director Christopher A. Wray, for potential "materially false statements they made to the Committee during the course of the Committee's investigation. "In a statement, Grassley said, "When a well-meaning citizen comes forward with information relevant to the committee's work, I take it seriously. It takes courage to come forward, especially with allegations of sexual misconduct or personal trauma. I'm grateful for those who find that courage."Grassley continued, "But in the heat of partisan moments, some do try to knowingly mislead the committee. That's unfair to my colleagues, the nominees and others providing information who are seeking the truth." 1103

Since the beginning of the year, wildfires have burned over 3.2 million acres in California. Since August 15, when California’s fire activity elevated, there have been 25 fatalities and over 4,200 structures destroyed.In August, three of California’s four largest wildfires on record sparked. Currently, the largest, the August Complex fire burning east of Chico, stands at 803,489 acres.“We’re living in a world with greater wildfire risk from one-degree warming. Two degrees of warming will intensify those risks,” said Dr. Noah Diffenbaugh, professor of Earth System Science at Stanford University.Dr. Diffenbaugh says in the last 40 years there has been a tenfold increase in the amount of land burned by wildfires, and that number directly correlates to Earth’s warming from climate change.He says the science is pretty straightforward. As temperature rises fuels dry out more easily, which makes less-prone areas spark plugs for fires. Then add in the changes in humidity, wind speeds, and long-term weather patterns that are all affected by climate change and wildfires become larger, stronger, and more frequent.Seventeen of California’s 20 largest fires in history all started after the year 2000.“Very careful, objective, hypothesis-driven research has shown that about half of that increase in the area burned in the western United States is attributable to the long-term warming,” said Dr. Diffenbaugh.The Center for Climate and Energy Solutions says between 1984 and 2015, the number of large wildfires doubled in the western United States. It also estimates that for every one-degree rise in Earth’s temperature, the average area burned from a wildfire could increase by 600 percent in some places.“We have two of the three largest wildfires in California’s history burning right now so it is a simple fact,” said Dr. Diffenbaugh.The increase in fire activity also increases the strain put on resources.Recently, national fire managers raised the United State’s fire preparedness level to five, which is its highest level, making all fire-trained federal employees available for assignment. 2112

Several people were hurt in an "inmate-on-inmate" disturbance at CoreCivic's Red Rock Correctional Facility in Eloy, Arizona on Sunday morning.Twelve inmates were taken to outside medical facilities for treatment of non-life-threatening injuries, and one staff member was treated and released for minor injuries sustained in the incident, according to Jonathan Burns, CoreCivic's Director of Public Affairs.Burns says the disturbance happened just after 8:30 a.m. local time.The facility has been secured and all inmates and staff are accounted for, Burns said. CoreCivic is working with the Arizona Department of Corrections and local law enforcement as they continue to investigate.   724

Seven inmates were killed and 17 others were injured overnight at a South Carolina prison -- the fourth deadly incident at the facility in the past 10 months.No officers were injured in the latest fracas at Lee Correctional Institution in Bishopville, said Jeffrey Taillon, spokesman for the South Carolina Department of Corrections.The incident started at 7:15 p.m. ET Sunday and involved "multiple inmate altercations in three housing units," Taillon said. The facility was secured at 2:55 a.m. ET Monday. 515

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