Now playing Next World News World's first floating dairy farm could be wave of the future "It's a logical step to produce fresh food on the water." 04/09/2018
Now playing Next World News International Space Station springs a leak A "micro-meteorite" is believed to have caused the tiny leak. 30/08/2018
Now playing Next China Air pollution can damage our intelligence, study finds Exposure to air pollution may impede cognitive ability as people become older, with less-educated men the worst affected, a new study has found. 28/08/2018
Now playing Next World News This video game knows when you're scared — and it wants to use that against you There is hope that biometrics can not only improve video games but also help create experiences that can be psychologically beneficial. 26/08/2018
Now playing Next World News Volunteers found Iran's propaganda effort on Reddit — but their warnings were ignored More than a year before the announcement from Facebook and Twitter, a group of moderators on Reddit noticed a peculiar pattern of submissions. 24/08/2018
Now playing Next World News Iran's Facebook strategy had echoes of Russian playbook Just about any nation can use the same strategies, and several may already be veterans at it, experts said. 23/08/2018
Now playing Next World News DNC subject of new attempt to breach its security An unidentified person or group created a login page in an attempt to trick DNC staffers into giving up their usernames and passwords. 23/08/2018
Now playing Next World News Ancient remains show early human interbreeding A 50,000-year-old bone from a young girl yields evidence that early humans mixed things up frequently. 23/08/2018
Now playing Next World News Verizon admits 'throttling' data to California firefighters amid blaze Verizon admitted that it should have lifted speed restrictions for firefighters, but said the issue was not due to the rollback of net neutrality rules. 23/08/2018
Now playing Next World News Scientists discover water ice on moon's surface. Here's why that's big news. The water could provide a critical resource for future expeditions. 22/08/2018
Now playing Next World News Russia's political meddling efforts go beyond midterms, experts say Cybersecurity experts who spoke with NBC News said midterms are just a small part of the broader digital battle being fought between Russia and the U.S. 22/08/2018
Now playing Next World News Facebook says it found Iran-based propaganda effort Facebook said it removed 652 pages, groups and accounts that originated in Iran and targeted people around the world, as well as other pages associated with Russian agents. 22/08/2018
Now playing Next World News A rogue star may explain why the outer solar system is so odd Scientists have a new explanation for Pluto's tilted orbit and other idiosyncrasies. 21/08/2018
Now playing Next World News Why supersized solar farms are sprouting around the world A vast photovoltaic facility now being built in Egypt is part of a global trend. 20/08/2018
Now playing Next World News Robert Zubrin wants to establish a 'new branch of human civilization' on Mars Mars Society co-founder says robotic landers and rovers aren't enough. 20/08/2018
Now playing Next World News Trump claims social media censors conservatives Trump's tweets come after Facebook, Google and Apple have each taken steps to remove conspiracy theorist Alex Jones from its platforms. 20/08/2018
Now playing Next World News Instaquiz: your questions answered Instaquiz: your questions answered 18/08/2018
Now playing Next World News How gravity will make this new probe the fastest human-made object NASA's new spacecraft will hit 430,000 miles an hour as it nears the sun. 16/08/2018
Now playing Next World News Robots influence kids, even when wrong, study finds "It's a bit sinister, isn't it? Children succumb to peer pressure from robots," one researcher says. 15/08/2018
Now playing Next World News Twitter CEO Jack Dorsey on Alex Jones, election security and regrets "We can't build a service that is subjective just to the whims of what we personally believe," Dorsey told NBC News' Lester Holt in an exclusive interview. 15/08/2018