Now playing Next USA Annual meteor shower peaks tonight. Here's how to see the shooting stars. The annual sky show could produce about eight shooting stars per hour. 08/10/2019
Now playing Next USA Ancient lost city uncovered in Israel was the 'New York City' of its time The 5,000-year-old metropolis was one of the first of its kind in the region. 08/10/2019
Now playing Next USA The life-saving science behind the 2019 Nobel Prize for Medicine The research could lead to new treatments for potentially deadly conditions including cancer, heart attack and stroke. 08/10/2019
Now playing Next no comment China launches satellite that can photograph every metre of ground China has successfully launched an observation satellite from the Taiyuan Satellite Launch Center 05/10/2019
Now playing Next USA NASA announces 'spacewalk bonanza,' including first all-female outing The space agency is planning an ambitious schedule of 10 spacewalks over the next three months. 05/10/2019
Now playing Next France Watch: Tetraplegic man walks again thanks to mind-reading exoskeleton The technology represents a scientific breakthrough that could bring hope to tetraplegics seeking to regain movement. 04/10/2019
Now playing Next USA Iran-linked hackers tried to compromise presidential campaign, Microsoft says The company said that it had seen "significant cyber activity" from a group of hackers that it believes "originates from Iran and is linked to the Iranian government." 04/10/2019
Now playing Next USA We may be closing in on the discovery of alien life. Are we prepared? New robotic craft bound for Mars should give us our best shot at finding life on the Red Planet. 04/10/2019
Now playing Next USA A RoboCop, a park and a fight: How expectations about robots are clashing with reality When Cogo Guebara pressed a button on a robot to call the police, she was instead instructed to "step out of the way." 04/10/2019
Now playing Next USA US Attorney General to Facebook: We need 'lawful access' to messages Facebook acknowledges the needs of law enforcement but wants to protect its users from unwanted snooping. 04/10/2019
Now playing Next USA Sports Illustrated to cut staff as new owner takes over The laid-off staffers are the latest victims of downsizing affecting digital and print media, which has struggled to retain advertising revenue. 04/10/2019
Now playing Next USA Tiktok bans political and advocacy advertising from its platform Political ads clash with its "positive, refreshing environment," says Blake Chandlee, Tiktok's vice president of global business solutions. 04/10/2019
Now playing Next USA Trump seized on a conspiracy theory called the 'insurance policy.' Now, it's at the center of an impeachment investigation. Just months after Trump's inauguration, conspiracy theorists pushed a fanciful and unsubstantiated narrative in which the DNC framed Russia for election interference. 03/10/2019
Now playing Next USA What is dark energy? The mysterious force is pushing galaxies apart and causing the universe to expand at an accelerating rate. 03/10/2019
Now playing Next USA Uber just launched an app to connect temp workers with jobs The launch of Uber Works comes as the ride-hailing company has been struggling to turn a profit. 03/10/2019
Now playing Next USA Inside the startup that is building AI-powered military technology 'The technology companies that should be solving these problems refuse to do so," Anduril co-founder Palmer Luckey told NBC News. 03/10/2019
Now playing Next USA Apple CEO Tim Cook shows unprecedented support to DACA ahead of SCOTUS decision "Our country made a deal with a highly vulnerable population interested in a bright future, and we should keep that deal," said Cook. 02/10/2019
Now playing Next USA Our solar system's mysterious 'Planet 9' may actually be a black hole A new theory suggests that a so-called primordial black hole may lurk beyond Neptune in the outer solar system. 02/10/2019
Now playing Next USA Google will soon let you delete your YouTube history Tech giants are battling to introduce privacy tools that will convince users — and regulators — that they do not have an iron-clad grip on your data. 02/10/2019
Now playing Next USA Iceberg bigger than L.A. just broke off Antarctic ice shelf Scientists say the calving is part of a natural process, though they worry about shrinking polar ice and the resulting rise in sea levels. 02/10/2019