U.S. News & World Report announced changes to the methodology of its controversial Best Colleges rankings to emphasize the success of diverse students and to remove the influence of alumni giving and class size, the media company said in a statement.

Slack has been hit by unusual errors that have seen messages disappear and duplicate. Problems have been reported by a “small percentage” of users, according to the office chat app. Those affected said they were seeing messages duplicate or not send, especially in groups. The company acknowledged the problem and said that it was investigating. “We’re receiving reports that a small percentage of users are experiencing issues with loading and sending messages,” it said in a post to its status page. “We’re actively looking into this, and we’ll report back as more information becomes available.” Tracking website Down Detector confirmed the issues, with a relatively small number of reports from users that the app was not working as expected. It was unclear why the problems were only affecting some users, and what marked out those who were hit by it. It was also unclear whether there was any easy way for those affected to make the app work as normal again. The outage comes just a few days after another major outage at the office chat app. This time around, the problems came at the end of the working day in the UK, and before lunchtime in the US. Read More Slack is down Photoshop unveils ‘extraordinary’ AI that transforms your pictures with a text prompt ChatGPT creator issues stark warning on AI

It feels like every day there’s a science story that comes along ready to blow our tiny minds, and today is no exception. A series of ancient interconnected cities have been discovered in the remote El Mirador jungle Guatemala, and it’s changing our entire understanding of the ancient civilisation. More than 400 settlements have been uncovered with some dating back as far as 1,000 BC. They’re linked by roads too, and it’s led them to be described as “the first freeway system in the world”. Sign up to our free Indy100 weekly newsletter Richard Hansen, a research professor at the University of Idaho, is an expert on the project and he’d called the findings a “game-changer”. It was previously thought that the Mayan peoples were nomadic, but these cities have changed the scientific community’s understanding. Speaking to the Washington Post, Hansen said: "We now know that the Preclassic period was one of extraordinary complexity and architectural sophistication, with some of the largest buildings in world history being constructed during this time.” On top of the 110 miles of interconnected roads, the discoveries also showed evidence of organised agriculture and even hydraulic systems. The findings are the result of work which first began in 2015, which saw lidar technology uncovered signs of ancient structures below the surface. Archaeologist Enrique Hernández, from San Carlos University said about the findings: “Now there are more than 900 [settlements]… We [couldn’t] see that before. It was impossible,” he said. Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

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Google is rolling out new artificial intelligence tools to help marketers create advertisements, seeking to expand its use

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