Now playing Next USA Is Pluto a planet — or dwarf planet? NASA chief rekindles emotional debate Jim Bridenstine just called Pluto a planet even though the rocky body at the edge of our solar system is now officially designated a dwarf planet. 29/08/2019
Now playing Next Ethiopia Fossil discovery reveals face of oldest early human ancestor The ancestor's face has been reconstructed from a skull found in Ethiopia and is the direct ancestor of the skeleton, Lucy, found in 1974. 29/08/2019
Now playing Next USA Uber, Lyft propose $21 an hour minimum wage for drivers in California Gig economy companies that were once seen as an innovative addition to the labor market have come under growing scrutiny for how they treat their workers. 29/08/2019
Now playing Next USA Video of voting malfunction casts shadow on Mississippi governor's race A viral cellphone video of a defective voting machine raised doubts about a Republican primary on Tuesday, sparking broader concerns about U.S. elections. 29/08/2019
Now playing Next USA A trip to Mars could cause brain damage. Here's how NASA aims to protect astronauts. New research suggests that exposure to radiation could trigger anxiety and impair cognition. 28/08/2019
Now playing Next USA How U.S. ended up targeting a star Google engineer Anthony Levandowski was a rising star in the Bay Area world of engineering who for years pushed computing boundaries of all kinds. 28/08/2019
Now playing Next USA Former Google self-driving car engineer charged with stealing trade secrets Anthony Levandowski was once one of Google's top self-driving car engineers and was later fired from Uber. If convicted, he could face years in prison. 27/08/2019
Now playing Next USA 'Massive pool' of methane discovered hidden deep underground The discovery helps solve a longstanding mystery and yields new insights about the possibility of life on other worlds. 27/08/2019
Now playing Next USA Mysterious space plane breaks record on latest military mission The robotic craft has logged nearly 719 days of orbital spaceflight, and counting. 26/08/2019
Now playing Next USA Facebook bans Epoch Times ads after huge pro-Trump buy By hiding its multimillion-dollar dark money ad spend, the organization bypassed Facebook's political advertising transparency rules. 26/08/2019
Now playing Next USA Cyborgs will replace humans and reshape the world, famed scientist says 'Our supremacy as the prime understanders of the cosmos is rapidly coming to end.' 25/08/2019
Now playing Next USA In Cuba, gamers lament what they see as the end of the island's underground network "I don't understand why such a benign network that does not talk about politics, religion or pornography would disappear," one SNet user lamented. 24/08/2019
Now playing Next USA This hypersonic airliner would take you from Los Angeles to Tokyo in under two hours The 300-passenger Stratofly MR3 would hit speeds of up to 5,400 miles an hour. Just don't expect to book a flight anytime soon. 23/08/2019
Now playing Next USA This hypersonic airliner would take you from Los Angeles to Tokyo in under two hours The 300-passenger Stratofly MR3 would hit speeds of up to 5,400 miles an hour. Just don't expect to book a flight anytime soon. 23/08/2019
Now playing Next USA Does ViacomCBS stand a chance against streaming giants Netflix and Amazon? CEO Bob Bakish is covering all bases, hoping that CBS will catch any subscribers who fall off the pay model that Viacom offers. 23/08/2019
Now playing Next USA Newly released messages reveal when Facebook first knew about Cambridge Analytica breach Internal messages show what Facebook employees knew about Cambridge Analytica and when they first learned of its data scraping. 23/08/2019
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