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Australian scientists are searching for the remnants of a meteor which burned spectacularly across the sky in Perth Tuesday night.The unusual phenomenon was caught on camera by multiple spectators, and described as a "fireball" on social media.Curtin University professor Phil Bland told CNN it was "almost certainly" a chunk of asteroid coming through the atmosphere, an event which he said occurs only a couple of times a year. 437

AURORA, Colo. — Three Aurora police officers under investigation for a photograph taken near the site where Elijah McClain struggled with officers were seen in the picture imitating the carotid hold used on McClain by police before the 23-year-old Black man died last August, two sources with knowledge of the situation told KMGH on Tuesday.Neither source had personally seen the photograph of the officers as of Tuesday afternoon, though they were aware of what the photograph showed.Aurora Interim Police Chief Vanessa Wilson on Monday night announced the officers were being investigated for a photograph but declined to say what the photograph showed.Aurora Mayor Mike Coffman on Tuesday tweeted that he was "deeply concerned over the facts surrounding the photographs," but Coffman also did not detail what was shown in the photographs.The officers were notified of their disciplines on Tuesday morning, the sources told KMGH, but the punishments were not yet public. Officers have a three-day period to appeal the discipline, the sources said.The picture depicting the involved officers was sent in a group text to other officers before it was reported to police officials, the sources said.Earlier Tuesday, Aurora police spokesperson Officer Matthew Longshore said the photos were reported to the department by a fellow Aurora officer, which the sources said occurred last Thursday. He said the police chief review board – comprised of the department’s three division chiefs and the deputy police chief – were reviewing the photos and will make a decision on whether, or how to, punish the officers.Longshore said that the officers could potentially be terminated depending on the review board’s decision. Officers would also be able to appeal the decision.The investigation will be “publicly released in its entirety promptly upon its conclusion,” said Wilson, adding the investigation will include reports, photographic evidence, officer’s names, “and my final determination which can rise to the level of termination.”Mari Newman, the attorney for McClain’s family, said in a statement Tuesday morning that APD found “a new low.”“This is a department where officers tackled an innocent young black man for no reason, inflicted outrageous force - including two carotid chokeholds - for fifteen minutes as he pled for his life, joked when he vomited, and threatened to sic a dog on him for not lying still enough as he was dying,” Newman said in a statement. “They tampered with their body cameras to hide the evidence. They exonerated the killers. They deployed riot police and spewed pepper gas on peaceful protestors at a vigil of mourners playing the violin. And now this.”Omar Montgomery, president of the Aurora branch of the NAACP, said Tuesday afternoon that he had not seen the photographs in question but said the issue "is something that further erodes that relationship" between Aurora police and the community.Monday’s announcement was the latest in a series of public relations disasters over the past year for the embattled police department.Earlier Monday, Wilson spoke to KMGH and other local news outlets after her officers pepper-sprayed protesters during a Saturday demonstration in which hundreds gathered to demand justice in the death of the 23-year-old, who died after the encounter with police in August of last year. Wilson made no mention of this internal affairs investigation Monday evening, despite pledging to show transparency and rebuild trust in the department when she took on the job at the beginning of the year.Wilson defended the actions of the officers, claiming agitators were throwing rocks at officers and were trying to breach fences protecting the Aurora Police Department headquarters.Coffman has called for a special city council meeting Tuesday to hear from police about their response to Saturday's protests over the death of Elijah McClain. Attorney General Phil Weiser was named as the state's independent investigator in the case last week.Gov. Jared Polis said at a news conference Tuesday afternoon that it was important for law enforcement agencies across the state to develop trust with the communities they serve.This story was originally published by Ryan Osborne and Jennifer Kovaleski at KMGH, with contributions from Adi Guajardo and Oscar Contreras. 4328

AUSTIN, Texas — For Brett Hagler, the co-founder of non-profit New Story, building homes for people without adequate shelter is nothing new."We get a large piece of land and work with families that have been living in shacks or tents without shelter and design a totally new community with the families.”Approximately one billion of the world’s population is without proper shelter.To make a dent in that he says, they have to think outside the mold.“We believe traditional ways cannot get us there.”So for New Story’s next endeavor—adding more communities to the land they’ve already acquired in El Salvador—they teamed up with a brand new startup.That’s where Evan Loomis comes in. He’s the co-founder of Austin, Texas-based Icon, a company focused on new technologies for building homes.Their first big debut came at this year’s South by Southwest festival in their hometown.“This is a gigantic robot,” Loomis says, gesturing toward a large steel frame on wheels. “[It] really does some amazing things. Down to the millimeter it knows exactly where to place building materials.”In this case that material is a proprietary mixture of concrete, that pours out of a nozzle on the underside of the metalwork. And the machine moves along a computerized map to create a house.“This is basically the first permitted 3D printed house in the United States,” he said.“We have to invest in [research and design],” Hagler said. “[We asked ourselves] ‘how do we get a breakthrough in cost, speed, and quality?’ And that’s how we landed upon 3D-home printing. The excitement in the air is palpable as they walk us through and around this modest home built up of about 100 one-inch thick concrete layers.“It’s stronger than regular cinder block,” Hagler said. It also comes at a fraction of the cost of a regular house. This model had a price tag of about ,000 but they hope to get the price down to ,000.“We can build in a fraction of the time [compared to traditional construction methods], and it can have a higher quality, strength, and sustainability for the environment."It was 'printed' in just 48 hours. Eventually, they say it will be done in just a half day. It’s a small but open floor plan — with no physical doors — and rooms are separated by partial walls made up of the printed concrete.They say they’ll easily be able to customize different designs.The prototype home can fit a family of four or five.“If you’re coming from a tent or shack and you move into this,” Hagler said, “it’s a significant life-changing difference.”One of the things they’re most excited about with their upcoming 3D-homes project in El Salvador is the fact that they’re introducing groundbreaking technology to the people who usually see tech advances last.“We are actually bringing them the future -- which is robotic construction of housing — first,” Hagler said. “And they’re really excited about that.”They say they plan to begin construction in El Salvador before the end of the year with the hopes of finishing their first community of homes by early 2019. There could one day be plans for 3D printed homes in some of the poorest areas of the United States as well, Loomis said, but he has his eye set on possibly expanding to terrain that’s literally out of this world.“It could be a really great solution for making space habitation a lot more achievable,” Loomis said. “We hit a nerve with this technology, and we are going to hit the gas hard and try to take it to everybody now.” 3528

At Allan Hancock College’s Fire Academy, Battalion 146 recently went through some intense rescue scenarios.“Help a brother out. Come on,” shouted an instructor.The person responsible for training the future firefighters is academy coordinator Andy Densmore, who has been in this industry for almost four decades and is retiring at the end of this year.“There’s nothing you can do about it,” he said. “We have to make the change.”Changes due to COVID-19.Since the pandemic hit, academy class sizes have been cut by a third, cadets are screened before they enter the facilities, they socially distance themselves once they’re in and wear masks when they’re not in face pieces.“The nice part is we asked these kids for their commitment the first day that we meet them and we said, ‘there’s only one variable in this entire program and it’s you,’” Densmore said.As Densmore’s career comes to a close during this crisis, Camila Schafer, class president of Battalion 146, is just starting hers.“Whether it’s a pandemic, it’s a fire, it’s a surf rescue, we’ll answer that call,” she said.Schafer says instructors can control all aspects of a cadet’s day while on campus but once they leave the academy, however, cadets are committed to an individual responsibility.“On weekends, we’re studying. we’re hitting the books,” she said. “We’re making sure that we’re not out there putting our battalion in jeopardy and possibly getting this virus.”Employment of firefighters is projected to grow faster than the average for all occupations across the country, according to the Bureau of Labor Statistcs.While this fire academy is training with new challenges, Densmore believes smaller class sizes could make cadets like Schafer better prepared than firefighters of the past.“We don’t graduate mediocre,” he said. “Our standards are really, really high. And we exceed what the state requires." 1888

As we inch toward another national election, it may seem that bridging social, economic and political division is insurmountable. But one artist has spent years bringing people together with a message of reconciliation.Rich Alapack is the founder of “We All Live Here”, a project that aims to build unity through community partnerships and public art installations.For the last five years, he’s been spreading his message of positivity and inclusiveness through interactive murals.He’s brought together students, educators and businesses to spread the message that “we all live here.”“Income equality, gender equality, racial equality, sexual equality, the environment, all fall under the umbrella of these four really simple words,” explained Alapack.When he first began his work, he was surprised at how much the phrase resonated.“I started getting messages from people all over the world encouraging me to keep spreading this message,” he said.He created a program for schools called ACT, which stands for art, community and technology. So far, he’s worked with 110 different schools and shared the message of positive inclusiveness with almost 40,000 kids.“With this division that's happening in our society these days, you can't tell someone that they're wrong and expect them to change their mind,” said Alapack. “So, this phrase ‘we all live here’ as a phrase to respond when they hear something hateful.”Seven thousand colorful magnetic panels outside one school mural he installed will eventually have messages scribbled on the underside by eighth-graders.“Believe in yourself, and you can do it,” read Alapack from one panel.A two-year study released this past summer by Beyond Conflict, tapped brain and behavioral scientists to look at toxic polarization in the U.S. What they found suggests that the divide is more a function of perception than reality.It’s something Alapack believes we can change.“It's indisputable. We do all live here, and so, from there you can find other common grounds and repair maybe some of this divide,” he said.And whether through chalk, paint or magnetic panels, Alapack says he hopes creativity and engagement will inspire others to look beyond differences to find understanding.“Creativity is this unique superpower that humans have, and if you can get someone to do something that they don't think they can, then all of a sudden that opens their horizons to what other things they might be able to do that they don’t think they can do.” 2490

来源：资阳报