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In 2017, Uber unveiled a tip feature on its app to allow customers to leave their driver a tip. It turns out many customers do not leave a tip. According to a study conducted by Bharat Chandar, Uri Gneezy, John A. List, and Ian Muira with the University of Chicago, only about 16% of rides end with a tip. The study also found that 60% of Uber customers never tip, while 1% always leave a tip. List's study included 40 million trips in the cities of Chicago, Boston, San Francisco, Salt Lake City, Asheville, North Carolina, and Bloomington, Indiana.List's study found the average of those who do tip is .11, about 26% of their fare. The survey found that customers were more likely to tip between 3 to 5 a.m., as well as around 6 p.m. on Fridays; that female drivers, especially younger females, were more likely to earn tips; and that 5-star drivers were twice as likely to earn a tip as a 4.75-star driver.So should you tip? That is up to you, but know that according to the 992

It could be a make-or-break week for the delicate trade negotiations between the United States and China as they drift further beyond the ambitious 90-day clock set last year by the leaders of the world's two largest economic superpowers.The Trump administration will welcome China's top trade negotiator in Washington on Wednesday in hopes of striking a comprehensive deal that would address long-standing concerns by the US government and top business executives.But the meeting comes as President Donald Trump is consumed with an escalating political crisis over his threat to close the US-Mexico border -- an echo of meetings earlier this year that were overshadowed by the partial government shutdown.As the tit-for-tat tariff war between the United States and China stretches beyond the one-year mark, top officials from both countries in recent weeks have begun to signal they are nearing the end of a trade standoff that once rattled Wall Street, though neither side has provided details about how talks progressed at last week's round of negotiations in Beijing."We're getting to the point where it's clear that both governments want a deal. The presidents want a deal, and they need to get through the end-game issues. This is a critical week," Myron Brilliant, executive vice president and head of international affairs at the US Chamber of Commerce told reporters on Tuesday.Some of the most difficult hurdles lie ahead as Chinese Vice Premiere Liu He arrives to continue talks with his counterparts Robert Lighthizer, the country's top trade envoy and Treasury Secretary Steven Mnuchin.At issue is whether the two sides can reach an agreement that could potentially lift billions of dollars of tariffs on Chinese goods in exchange for the United States having the power to take unilateral action to penalize Beijing if it fails to play by the rules of the deal."This end game issue -- this is what we're working through," said Brilliant. "This is why we don't have a final package at this point."Trump and other top administration officials in recent weeks have sent strong signals they plan on keeping in place tariffs on 0 billion of Chinese goods for a "substantial period of time.""We have to make sure that if we do the deal with China that China lives by the deal," Trump told reporters as he left Washington for Ohio ahead of Lighthizer and Mnuchin's trip to Beijing last week.At the time, Trump didn't spell out whether the US is planning to keep in place tariffs on all of the 0 billion of Chinese goods the US has imposed penalties or for how long.The White House could take a variety of approaches either by deciding to partially rollback tariffs or potentially reducing the level of tariffs currently imposed, a decision that will ultimately fall to the President who has favored a hefty tariff policy.Top officials have made clear they see the penalties as leverage over Beijing, but might be willing to ease some of them depending on the size of the deal.White House economic adviser Larry Kudlow has also hinted the United States would be willing to extend trade negotiations with China weeks or even months to strike the right deal."This is not time-dependent. This is policy- and enforcement-dependent," said Kudlow in a speech in Washington last week. "If it takes a few more weeks, or if it takes months, so be it. We have to get a great deal, as the president says, that works for the United States. That's our principle interest."Talks between the two sides have continued this month after the Trump administration officially shelved a plan to sharply increase tariffs on 0 billion of Chinese exports as the world's two largest economies inch closer to a deal. The administration hasn't offered a time frame on how long the US government would be willing to delay the tariff increase on China."You have a moment in time right now -- the focus of the two governments, the whole world is watching, the stakes are very high," said Brilliant. "Neither state wants to back away from these negotiations, so the momentum is still moving us forward to get to a final deal." 4120

Jesse Walaschek says 15 to 20 seconds saved him and his family.The 41-year-old, his wife and three kids -- ages 8, 6 and 4 -- had just left a fitness center at a shopping mall in the South Florida city of Plantation when a possible gas explosion Saturday shattered parts of the building, injuring at least 23 people, including two with serious injuries."We felt the loudest boom that you could possibly feel. I looked in my rear view mirror and it was just a dust cloud," Walaschek told CNN. "Had we walked out of that gym 15 seconds later, I would've been getting my kids in the car when it went off. I probably wouldn't be here, my kids wouldn't be here."A search of the blast zone has been completed, police said. There were no fatalities and all the victims have been located, Plantation Fire Deputy Chief Joel Gordon told reporters during a Saturday afternoon press conference.All the injured were taken to area hospitals, he said. Among the injured was a child, but the injuries were not classified as serious, Gordon said."We're relieved that considering the debris field and considering how we found the patients and where we found them, the injuries are not as severe as we would've thought they would be. So we're very thankful for that," Gordon said.The blast appeared to have occurred in a corner of the mall complex where two buildings intersect.News footage and social media video showed firefighters arriving at the mall, where windows were blown out of an LA Fitness and the facade of a pizza restaurant appeared to be blown out. A section of the complex appeared to sustain significant damage, with shattered windows and scattered debris.'It was almost like the world was ending'Walaschek was driving said while he is thankful they made it out safely, he worried about other families at the gym."Thing that was on my mind actually was the 20 to 25 children we saw in the children's area when we left," he said.Witnesses described a chaotic scene following the explosion.Alex Carver, who works at a deli across the street from where the explosion occurred, said he and his colleagues initially thought the sound was thunder."Then we felt the building shake and things started falling. I looked outside and it was almost like the world was ending," Carver, told 2289

In a new post on its website, the Federal Trade Commission is reminding people there is an act that allows them to share a truthful experience and opinion online, and that forms signed agreeing not to do so are invalid."Whether your summer plans include replacing your air conditioning, installing new flooring, or riding the range, you will probably read 368

In the battle between the adolescent penchant for hitting the snooze button and parental desire to rush them onto an early morning school bus, experts say science is increasingly siding with the snooze.The biological clock of teens is shifted, Dr. Mary Carskadon, director of the Sleep and Chronobiology Research Lab at EP Bradley Hospital, told CNN. That means everything influenced by the circadian timing process, including sleeping, waking and eating patterns are set later.And if teens have trouble naturally falling asleep at an early hour and don't get the recommended eight and a half to nine hours of sleep, asking them to be awake, ready and in a classroom by 7:30 a.m. can wreak havoc on their systems, Carskadon said.Students in one state have gotten a reprieve from the early morning blues. California Gov. Gavin Newsom signed legislation Sunday that pushes back start times for middle and high schools to align with teens' circadian rhythms. It's a move sleep experts hope more school districts will follow.That's especially because research suggests that when teens get a later start in the morning, they can do a better job of checking off the things on many parents' priority lists like:Paying attention and getting their homework doneFour out of five public middle and high schools in the US start before 8:30 a.m., the earliest time recommended for teens, according to the US Centers for Disease Control.Carskadon says the negative consequences of early waking on academic performance are obvious: Students have more trouble concentrating in class and retaining information, feel tired during the day, have more absences and tardiness and have a hard time doing their homework and class reading well.There isn't enough time between when their clocks tell them to go to sleep and when they need to be in class to get the sleep they need, she says. And to make matters worse, for many teens, their bodies are telling them it's still time to be in bed when they are trying to listen in class."A lot of kids will just be asleep in first period because their brains are -- almost literally -- on the pillow and not yet in the classroom," she said.Avoiding the junk foodWhen students are off of their regular sleep cycle, they often also fall off of their ideal eating cycle too, Carskadon said. Since the biological clock influences humans' eating, straying from the circadian rhythm could mean eating too much or eating the wrong food at the wrong times, she said.Who among us reaches for a healthy snack when we are tired and awake when we aren't supposed to be, asked Stacy Simera, a licensed social worker who is chair of the sleep committee for the Ohio Adolescent Health Partnership.That disruption not only means worse nutrition, but it can lead to an increased risk for Type 2 diabetes, Carskadon said.Staying out of troubleWhen it comes to impulse control, Carskadon and her colleagues say teenagers already have the accelerator pushed down without any breaks. That's because the emotional side of the brain is well developed in those years, but doesn't have a very strong link to the executive decision-making side.And neuroimaging studies showed that link is even weaker in teens without enough sleep. The result can be trouble controlling their impulses and increasingly engaging in risky behaviors like foregoing helmets, driving under the influence and abusing substances, Carskadon said.Keeping happy and safeFrom a physical health perspective, teens who get adequate sleep also are shown to suffer fewer car accidents and sports injuries, said Simera.She says teens fall asleep easiest and get the best quality sleep from 11 p.m. to 8 a.m. -- the sweet spot. And research shows that straying from that sweet spot and sleeping less is correlated to depression, anxiety and suicide, she said.One study found that for each extra hour of sleep adolescents get, 3899

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