Science / Tech News Last Update on August 28, 2015 08:37 GMT IN THE NEWS: FACEBOOK MILESTONE NEW YORK (AP) -- It's a record for Facebook. For the first time, a billion people used Facebook in a single day. It happened Monday -- and CEO Mark Zuckerberg marked the occasion with a post on his Facebook page. He notes that one of every seven people on Earth logged in to the social network on Monday. Overall, Facebook has nearly 1.5 billion users who log in at least once a month. It hit the 1 billion user milestone in October 2012. IN THE NEWS: APPLE WATCH FIGURES SAN FRANCISCO (AP) -- Do you own an Apple watch? Likely not, according to a new set of data from International Data Corporation. A new report estimates Apple shipped 3.6 million of its watches in the last quarter. That number is higher than what some analysts had estimated. But Apple hasn't revealed how many watches it has sold. Some analysts have concluded consumer interest in the device has been soft.