The current political discourse sounds like people are speaking two different languages, according to a new study. Penn State psychologists determined that even though Donald Trump and Hillary Clinton were both speaking English during the 2016 presidential election, semantically, they were so far apart that the difference was actually worse than if one of them were speaking Chinese. In a series of studies, the researchers found a split between the words democrats and republican presidential candidates used and how they meant them - they also found this'semantic divide' appears to be growing and may continue to make the possibility of a bipartisan dialogue difficult, if not impossible. The Penn State researchers compiled a list of 213 single words and 397 word phrases, including 136 politically charged words like'minority,' 'spending' and'justice.' They looked at all Presidential elections since 1999 and used an artificial intelligence neural network to statistically examine how often the words appeared together.

Amazon is launching a paid streaming music service, the latest entry in an increasingly crowded field. Amazon Music Unlimited is being positioned to compete against existing services such as Spotify and Apple Music. It will cost 8 per month, or 80 a year, for members of Amazon's 99-a-year Prime loyalty program. Non-Prime members will pay 10 a month, the same monthly fee charged by Spotify and Apple Music. Owners of Amazon's Echo smart speaker, meanwhile, will be able to get the unlimited music service on one device for 4 per month.

When technologists meet up to talk about driverless cars, they get all dewey-eyed about the wonders ahead: A dramatic reduction in traffic deaths. Time saved, more convenience, less stress. But Paul Saffo, the California futurist, told attendees at a car technology conference in Mountain View on Monday that, like with any new technology, there will be bad stuff too. When you don't need to drive, you don't even need windows. And some driverless car prototypes, he noted, don't have them.

The first presidential debate between Hillary Clinton and Donald Trump is in the books. I tweeted, took notes and picked some winners and losers. At times she came across as overly rehearsed and robotic. This week, the advertising world converges on New York City to discuss the industry and its ongoing changes. The team at Advertising Week has created a program full of interesting speakers and topics, including brand storytelling, mobile advertising and diversity.

All those cars on California's famously gridlocked highways could be doing more than using energy. They could be producing it. The California Energy Commission is investing 2 million to study whether piezoelectric crystals can be used to produce electricity from the mechanical energy created by vehicles driving on roads. The commission is choosing a company or university to take on small-scale field tests. It will study how the small crystals, which generate energy when compressed, could produce electricity for the grid if installed under asphalt.

Elon Musk said SpaceX successfully tested its Raptor rocket engine that might one day be used to transport people to Mars. SpaceX "achieved first firing of the Raptor interplanetary transport engine," Musk said Sunday night on Twitter. The engine is powered by methane and liquid oxygen. The disclosure came on the eve of Musk's scheduled appearance Tuesday at the International Astronautical Congress in Guadalajara, Mexico, where he is expected to discuss SpaceX's efforts toward eventually reaching Mars. Musk is chief executive of Hawthorne-based SpaceX, a privately held company whose full name is Space Exploration Technologies Corp.