Now playing Next USA YouTube removes channels spreading Hong Kong discord The channels used software to mask their origin and were consistent with China-linked accounts removed by Twitter and Facebook, the company said. 23/08/2019
Now playing Next USA Elon Musk seems serious about plan to nuke Mars The SpaceX CEO has proposed the use of nuclear explosions to warm Mars and make it more hospitable for humans. 22/08/2019
Now playing Next USA A battle over high-tech crime-fighting is dividing one of America's most dangerous cities Detroit's police chief says facial recognition is making the city safer. Some residents fear it could create a surveillance state. 22/08/2019
Now playing Next USA Extremists creep into Roblox, an online game popular with children NBC News was able to find more than 100 accounts that featured extremist and racist content 22/08/2019
Now playing Next USA NASA headed to ocean world that might harbor alien life The space agency is moving ahead with its Europa Clipper mission to an icy world, considered a likely place to find alien life. 21/08/2019
Now playing Next USA A years-old Instagram hoax is back — and it's tricking celebrities and politicians "If you're seeing a meme claiming Instagram is changing its rules tomorrow, it's not true," Adam Mosseri, head of Instagram, wrote on Twitter. 21/08/2019
Now playing Next USA California high school locks up cellphones to keep students focused Some experts say taking away the students' devices creates its own kind of distraction — and anxiety — for students 21/08/2019
Now playing Next USA Scientists think they spied a black hole devouring a neutron star for the first time The cosmic collision took place about 900 million years ago. 20/08/2019
Now playing Next no comment Beijing hosts robot extravaganza Superheroes, exoskeletons, and musical robots are all on show in Beijing. They're part of this year's World Robot Conference which highlights not only robots for play but also for the workplace. 20/08/2019
Now playing Next USA YouTube star PewDiePie announces marriage to long-term girlfriend "I'm the happiest I can be," Kjellberg tweeted. "I'm so lucky to share my life with this amazing woman." 20/08/2019
Now playing Next USA Inside the secretive media outlet that became one of Trump's biggest supporters Started almost two decades ago with a stated mission to "provide information to Chinese communities to help immigrants assimilate into American society," The Epoch Times now wields one of the biggest social media followings of any news outlet. 20/08/2019
Now playing Next USA Zeppelins stopped flying after the Hindenburg disaster. Now scientists want to bring them back. The proposed airships would move cargo more efficiently than oceangoing freighters — and produce far less pollution. 19/08/2019
Now playing Next USA Apple and Amazon push to keep their tax breaks. France says 'non.' Despite their best efforts, European and American politicians have been unable to close the tax loopholes employed by Google, Facebook and Amazon. 19/08/2019
Now playing Next USA Twitter and Facebook say China-linked accounts sought to 'sow political discord' in Hong Kong Twitter said it pulled down 936 troll accounts, many of which pushed conspiracy theories about the protest groups, according to examples shared by the company. 19/08/2019
Now playing Next Israel Man vs mozzie: Tech firm develops laser to track and target mosquitoes The system follows the insects with a red laser beam and sends a text alert to householders, letting them know where the mosquito can be found. 19/08/2019
Now playing Next USA This huge telescope could lead us to alien life. First it has to get off the ground. Astronomers and protestors are at an impasse over a plan to build the Thirty Meter Telescope atop a dormant volcano on the Island of Hawaii. 18/08/2019
Now playing Next Mongolia Why electric cars aren’t as environmentally-friendly as you think There are ecological question marks over the components used in electric cars, including the battery and the use of rare-earth metals. 17/08/2019
Now playing Next USA Scientists ventured inside a rare 'fire cloud.' Here's what they found. New research on the clouds aims to improve forecasts of weather and air quality. 17/08/2019
Now playing Next USA US border computer outage causes airport chaos Thousands of travellers faced delays after a Customs and Border Protection systems failure prevented immigration officials from processing passengers. 16/08/2019
Now playing Next USA Russian hackers, town budgets, Windows updates: Officials grapple with realities of election security Inside a 21-seat conference room in Silver Spring, Maryland, a meeting of the Election Assistance Commission convened to talk about a software update touched on much more. 16/08/2019