On Thursday, Nature’s 150th-anniversary edition featured news of a quantum computing breakthrough from Google.  The company’s CEO, Sundar Pichai, explained in a blog why he felt it as so significant.

For those of us working in science and technology, it’s the “hello world” moment we’ve been waiting for—the most meaningful milestone to date in the quest to make quantum computing a reality. But we have a long way to go between today’s lab experiments and tomorrow’s practical applications; it will be many years before we can implement a broader set of real-world applications. We can think about today’s news in the context of building the first rocket that successfully left Earth’s gravity to touch the edge of space. At the time, some asked: Why go into space without getting anywhere useful? But it was a big first for science because it allowed humans to envision a totally different realm of travel … to the moon, to Mars, to galaxies beyond our own. It showed us what was possible and nudged the seemingly impossible into frame.  That’s what this milestone represents for the world of quantum computing: a moment of possibility. 

Forty-seven states are taking part in a New York led antitrust investigation into Facebook. New York State Attorney General Letitia James made the announcement Tuesday, CNBC reported.

The multistate investigation was first announced in September with participation from Colorado, Florida, Iowa, Nebraska, North Carolina, Ohio, Tennessee and the District of Columbia, but has since expanded considerably. The probe will zero in on Facebook’s dominance in the social media industry and whether it broke any state or federal laws as a result of any anticompetitive conduct related to that dominance. “After continued bipartisan conversations with attorneys general from around the country, today I am announcing that we have vastly expanded the list of states, districts, and territories investigating Facebook for potential antitrust violations,” James said in a statement. “Our investigation now has the support of 47 attorneys general from around the nation, who are all concerned that Facebook may have put consumer data at risk, reduced the quality of consumers’ choices, and increased the price of advertising. As we continue our investigation, we will use every investigative tool at our disposal to determine whether Facebook’s actions stifled competition and put users at risk.”

Do you tip your Uber driving? No? Turns out 60 percent of us never do. That’s according to a new paper from the National Bureau of Economic Research, reported on by The Verge.

The paper was authored by Stanford University’s Bharat Chandar and University of California-San Diego’s Uri Gneezy, as well as John List, former chief economist at Uber who is now at Lyft, and Ian Muir, current head of economics at Lyft. The researchers were uniquely positioned: in addition to combining big data analyzation with field experimentation, the team actually helped Uber implement its in-app tipping option, which rolled out in June 2017. As such, they were able to develop data from more than 40 million trips. What they found was not a whole lot of tipping. Roughly 16 percent of Uber rides are tipped. Yet, most riders (60 percent) never tipped over the research team’s four weeks of data collection. Of those who do tip, very few (1 percent) tip on every trip. The remainder of people only tip on about 25 percent of trips.