Now playing Next World News What's the difference between a comet and an asteroid? The two kinds of celestial bodies have a lot in common, but they're not at all the same. 30/10/2018
Now playing Next World News NASA probe now closer to sun than any spacecraft ever Parker will make 24 close approaches to the sun over the next seven years, ultimately coming within just 3.8 million miles. 29/10/2018
Now playing Next World News How plants and animals can help humans fight climate change In the emerging field of biomimicry, scientists and inventors take inspiration from trees, whales and coral. 29/10/2018
Now playing Next World News A massive volcano is sliding into the sea. History shows that could be catastrophic. If the volcano's flank suddenly collapses, it could trigger a tsunami that has the potential to devastate the region. 28/10/2018
Now playing Next World News Attacks on Jewish people rising on Instagram and Twitter, researchers say Many but not all of the posts mention billionaire investor and philanthropist George Soros, who was among the targets in a series of attempted bombings. 27/10/2018
Now playing Next World News Comets and asteroids may be spreading life across the galaxy Are germs from outer space the source of life on Earth? 27/10/2018
Now playing Next World News Just don't call it Popemon: There's now a Catholic version of Pokemon Go Pope Francis is reportedly a fan of the game, which is intended to engage Generation Z with the Catholic Church. 27/10/2018
Now playing Next World News Some conservatives scramble to drown out far right 'false flag' theory With the arrest of a suspect who vehemently supported Trump, some conservatives tried to quell a far right conspiracy theory that edged into the mainstream. 27/10/2018
Now playing Next World News This astronomer fears a physics experiment could swallow up the entire universe Just how real is the risk? 27/10/2018
Now playing Next World News Microsoft stands by government bid for despite internal pushback As the lucrative deal caught the attention of many tech giants, it also sparked controversy as many company employees questioned the ethical implications. 27/10/2018
Now playing Next World News Facebook uncovers more disinformation activity tied to Iran Facebook, along with Twitter and Alphabet, in August removed hundreds of accounts tied to an Iranian propaganda effort. 27/10/2018
Now playing Next World News Amazon, Google and Snap shares decline after earnings reports Shares in tech companies have floundered in recent weeks amid broader stock market declines. 26/10/2018
Now playing Next World News Google says it has fired 48 people for sexual harassment in two years The figure was disclosed after The New York Times reported that Google executives accused of sexual harassment had been given lucrative exit packages. 25/10/2018
Now playing Next World News Tesla turns a profit in victory for CEO Elon Musk Shares rose more than 12 percent in after-hours trading, a measure of at least temporary vindication to embattled CEO Elon Musk. 25/10/2018
Now playing Next World News New report says world must boost efforts to suck carbon dioxide from the air By mid-century, we need to be removing 10 billion tons of atmospheric carbon dioxide each year. 24/10/2018
Now playing Next World News Here's how that weird, rectangular-looking iceberg came to be These bergs are actually more common than you may think. 24/10/2018
Now playing Next World News Facebook announces overhauled, simplified Messenger app The redesigned messaging app condensed the previous layout of 9 tabs down to 3 tabs — "Chats," "People," and "Discover." 24/10/2018
Now playing Next World News Elon Musk says Twitter locked his account over fear it had been hacked The Tesla CEO tweeted about his love for Japanese anime cartoons and said "I own a chibi Wolverine." 24/10/2018
Now playing Next World News Why social media is still a minefield for journalists Politico editor-in-chief John Harris became the most recent high-profile journalist to slip up on Twitter, where there is a temptation to stray from reporting. 23/10/2018
Now playing Next World News YouTube CEO calls on creators to rally against E.U. copyright legislation Wojcicki urged YouTubers to use the hashtag "#SaveYourInternet" in social-media posts to express opposition to the EU directive. 23/10/2018