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OpenAI has officially entered the browser wars. On Tuesday, the company announced Atlas, a new web browser with ChatGPT integration. At the moment, it's Mac-only, but I wouldn't recommend even my Apple friends jumping on board immediately—at least not without understanding the underlying risks. Atlas' AI web browsing If you've already used other AI browsers, like Perplexity's Comet, Atlas is going to feel familiar. In fact, that's also likely true if you've used any web browser before: Atlas is built on Chromium, the engine that powers browsers like Google Chrome, Microsoft Edge, and Opera. That means the core mechanics of Atlas are fairly standard; there's nothing particularly revolutionary happening here when it comes to sorting tabs or the browsing experience itself. The same is true ...

We may earn a commission from links on this page. Exercise is a healthy and, one might argue, necessary part of our lives. The guidelines from public health organizations tell you to aim for at least 150 minutes of “moderate” exercise each week, and that each minute of “vigorous” exercise counts double. That raises the question: What the hell is “moderate” exercise? How do you know when you’re doing it? Scientists measure METs, but you don't have to If you have any kind of smartwatch or fitness tracker, it may try to tell you that "moderate" exercise occurs at a certain heart rate. This isn't actually the case. The scientists who came up with the exercise guidelines didn't use heart rate as their guide. Instead, they used charts that measured how many "METs," or metab...