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Twitter CEO Jack Dorsey says "we're ready to question everything" about the social networking site that has been overrun by spam, abuse and misinformation.Dorsey says he and his team are working extensively behind the scenes to stamp out some of the harassment and hate speech that has generated bad headlines lately.But it is a long-term effort, he says, and he is reluctant to commit to an exact timetable for certain changes to Twitter's foundation.In twelve years, "we've changed a lot. But we haven't changed the underlying fundamentals," Dorsey told CNN in an in-depth interview at the company's headquarters on Friday.The basic fundamentals are what he is examining now. For instance: What does Twitter incentivize its users to do?"Every product decision we make is 'telling' them to do something," Dorsey said.So he is thinking about how to help users follow topics and hashtags, not just people."We are aware of some of the silos and how we're isolating people by only giving them crude tools to follow accounts. We need to broaden our thinking and get more back to an interest-based network," he said.Related: Twitter's Jack Dorsey: 'We are not' discriminating against any political viewpointDorsey is also rethinking how follower counts and "likes" on posts are displayed, because the race to gain followers and likes may encourage outrageous behavior.His view is that Twitter needs to be much more "transparent" and open about its actions. But that transparency, some of which was on display during Dorsey's media tour this month, means asking questions without actually answering them.Among the questions Dorsey asked in the CNN interview: "How do we earn peoples' trust?" and "How do we guide people back to healthy conversation?"While he may get credit for asking big, philosophical questions about how his site operates, Dorsey remains vulnerable to criticism about Twitter's inaction.He responded to that by saying "we are taking a lot more action than we ever have in the past." But much of the action is invisible to users, he asserted.For example: The disabling of bot networks and other suspicious accounts. Dorsey said Twitter challenges "10 million accounts every single week to see if they're automations or humans," and takes action accordingly.But Twitter's stock plunged last month when its quarterly earnings report showed a decline in user growth, which the company attributed to its efforts to clean up the site, akin to gardeners removing weeds.Nonetheless, Dorsey is committed to what he calls "conversational health" -- the quality of an exchange on Twitter -- which he is trying to measure with the help of two research groups. He said investors should take a look at the long-term trends: "We see this as necessary and right and we believe in it and we have conviction around it, and we'll take the hit in the short term."Related: Twitter is purging suspicious accounts from your follower countHe also asserted that "over the short term, a lot of this work is invisible, and over the long term, it starts to add up."As for some of the specific changes, like a rethinking of the like button, Dorsey was reluctant to talk about a timeline."We're looking and thinking about all these things right now," he said. So: By the end of the year? "I worry about a time frame like that," he said, "because we also need to take into consideration -- we're a small company. I mean we, in comparison with our peers, we're a small company, but we have this outsized impact and I believe, importance."Later, he added, "We have to understand first the problem we're trying to solve, like what incentives we actually want to drive; not just what we want to remove, but what we want to drive." But he said he knows he wants incentives "that encourage people to talk and to have healthy conversation." 3824

Tropical storm conditions were expected to begin Monday morning in parts of Texas and Louisiana as Tropical Storm Beta slowly worked its way into a part of the country that’s already been drenched and battered during this year’s exceptionally busy hurricane season.No longer expected to gain hurricane strength, forecasters also decreased estimated rainfall totals from Beta early Monday, saying in a U.S. National Hurricane Center advisory that up to 15 inches (38 centimeters) of rain could fall in some areas. That’s down from earlier predictions of up to 20 inches (51 centimeters).Maximum sustained winds also decreased to 50 mph (85 kph) Monday morning. Beta was moving west at 6 mph (9 kph), forecasters said.It was the system’s slow movement and storm surge were generating concerns in coastal communities. Storm surge up to 5 feet (1.5 meters) was forecast from San Luis Pass to Sabine Pass in Texas.Beta was set to make landfall along Texas’ central or upper Gulf Coast late Monday night, forecasters said. It was then expected to move northeastward along the coast and head into Louisiana sometime mid-week, with rainfall as its biggest threat.Forecasters said Beta was not expected to bring the same amount of rainfall that Texas experienced during either Hurricane Harvey in 2017 or Tropical Storm Imelda last year. Harvey dumped more than 50 inches (127 centimeters) of rain on Houston and caused 5 billion in damage in Texas. Imelda, which hit Southeast Texas, was one of the wettest cyclones on record.The first rain bands from Beta reached the Texas coast on Sunday, but the heaviest rain wasn’t expected to arrive until late Monday into Tuesday.In low-lying Galveston, which has seen more than its share of tropical weather over the years, officials didn’t expect to issue a mandatory evacuation order but they advised people to have supplies ready in case they have to stay home for several days if roads are flooded.“We’re not incredibly worried,” Galveston resident Nancy Kitcheo said Sunday. Kitcheo, 49, and her family had evacuated last month when forecasts suggested Hurricane Laura could make landfall near Galveston, but they’re planning to buy supplies and wait out Beta. Laura ended up making landfall in neighboring Louisiana.Kitcheo, whose home is 18 feet (5.5 meters) above the ground on stilts, said she expected her street to be impassable as water from rising tides was already flooding neighboring roadways on Sunday.“This has definitely been more stressful, this hurricane season,” she said.Galveston, which has about 50,000 residents, was the site of the deadliest hurricane in U.S. history, a 1900 storm that killed an estimated 6,000 people. The city was also hit hard in 2008 by Hurricane Ike, which caused about billion in damage. Kitcheo’s previous home was heavily damaged during Ike and had to be torn down.Beta was churning slowly through the Gulf of Mexico on Monday morning about 110 miles (180 kilometers) south of Galveston, and 95 miles (150 kilometers) east-southeast of Port O’Connor, Texas, the U.S. National Hurricane Center said.Forecasters ran out of traditional storm names on Friday, forcing the use of the Greek alphabet for only the second time since the 1950s.Houston Mayor Sylvester Turner on Sunday said while Beta was not expected to bring rain like Harvey, he cautioned residents to “be weather alert.”“Be weather aware because things can change. This is 2020 and so we have to expect the unexpected,” said Turner, adding the city expected to activate its emergency center on Monday.In Victoria County, about 120 miles (193 kilometers) southwest of Houston, officials asked residents to prepare for up to 10 to 15 inches (25 to 38 centimeters) of rain.“As with any event, panic is never helpful or necessary, but preparation is, and now is the time to finalize those plans,” said County Judge Ben Zeller, the top elected official in Victoria County.Beta is forecast to dump heavy rain on the southwestern corner of Louisiana three weeks after the same area got pounded by Hurricane Laura. More than 41,000 homes and businesses remain without electricity, and Beta could add to that figure by toppling trees that were left leaning by the previous storm, said meteorologist Donald Jones of the National Weather Service office in Lake Charles, Louisiana. Storm debris from Laura clogging draining ditches in hard-hit areas such as Lake Charles could increase the threat of flooding.If Beta makes landfall in Texas, it would be the ninth named storm to make landfall in the continental U.S. in 2020. That would tie a record set in 1916, according to Colorado State hurricane researcher Phil Klotzbach.Hurricane Teddy was at sea Monday, with maximum sustained winds of 100 mph (155 kph) and moving north at 9 mph (15 kph). Teddy was centered 165 miles (270 kilometers) southeast of Bermuda about a week after Hurricane Paulette made landfall in the wealthy British territory.Parts of the Alabama coast and Florida Panhandle were still reeling from the effects of Hurricane Sally, which roared ashore on Wednesday. At least two deaths were blamed on the system.___Associated Press reporters Kelli Kennedy in Fort Lauderdale, Florida, and Russ Bynum in Savannah, Georgia, contributed to this report.___Follow Juan A. Lozano on Twitter: https://twitter.com/juanlozano70 5342

TUCSON, Ariz. — Lute Olson, a legendary University of Arizona basketball coach who led to the Wildcats to the winningest streak in their history, has died at the age of 85, his family says.Lute Olson was the soul of Tucson. Revered by the community, regarded as one of college basketball's greatest coaches of all-time, Olson brought a sense of pride to Arizona’s basketball program, and to southern Arizona.He led the Wildcats to four final four appearances including a national championship, and an amazing 23 consecutive NCAA tournament appearances.Yet the legendary Arizona wildcat basketball coach didn't arrive in Tucson until he was close to fifty years old.Olson was born in North Dakota and began his career coaching high school teams, first in Minnesota, then in California.Olson taught his teams to want more - to reach for a dream - and drive for perfection. He compiled a 24-2 record in his only season at Long Beach State.That was followed by the University of Iowa, where he led the Hawkeyes to the 1980 Final Four.Three years later, Olson surprised the college basketball world, leaving the Big Ten power for an Arizona Wildcat program coming off a 4-24 season.Olson made a bold statement, advising fans in April of 1983 that they should get their tickets now.Just two years later, Arizona was a winner.Olson turned down other college opportunities, saying that Tucson was his home. He would also decline offers from the NBA.“I love coaching college guys because you can just see them grow from kids to young men before they move on,” he said in a 2016 interview.His first Wildcat Final four team came in 1988. It was a beloved group made up of not just basketball stars, but those who would be successful in other walks of life – including record producer Harvey Mason, baseball great Kenny Lofton and of course, Steve Kerr. 1849

Vice President Mike Pence and second lady Karen Pence both tested negative for COVID-19 on Friday morning, according to Pence's press secretary. "As has been routine for months, Vice President Pence is tested for COVID-19 every day. This morning, Vice President Pence and the Second Lady tested negative for COVID-19," said Devin O'Malley, Mike Pence's Press Secretary. "Vice President Pence remains in good health and wishes the Trumps well in their recovery." The announcement by the VP's Press Secretary came hours after President Donald Trump confirmed that he and the First Lady had both tested positive for COVID-19. 631

Uber is adding another transportation option on its app: the electric bike.The new electric motor option called JUMP is just in a few cities right now, but the company hopes to soon make it nationwide.“It's part of a growing mobile effort by Uber to provide all kinds of modes of transportation,” says Dave Nelson, director of operations for JUMP Bikes. “JUMP is an electric, dockless bike that allows you to go further faster and have more fun doing it.”  Similar to electric scooters, the bikes start at ; for every minute after the first, it costs <云转化_句子>.15.Users log into their Uber app in order to request the bike. The app tells you where the bike is located. Once you find your bike, you simply punch in a code and the bike is yours to use.So, what makes Jump bikes different than the motorized transportation options already available?“It is a dockless bike that allows you to pick it up, lock it, drop it off anywhere that's convenient for you,” explains Nelson. “And then, the biggest difference is, that it's electric. It takes you 20 miles per hour and lets you get to where you are going a little quicker.” 1130

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