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Most crossword puzzle fans have experienced that moment where, after a period of struggle on a particularly difficult puzzle, everything suddenly starts to come together, and they are able to fill in a bunch of squares correctly. Alexander Hartmann, a statistical physicist at the University of Oldenburg in Germany, had an intriguing insight when this happened while he was trying to solve a puzzle one day.

When X CEO Linda Yaccarino took the stage as a keynote speaker at CES 2025, she revealed that "90 percent of the advertisers" who boycotted X over brand safety concerns since Elon Musk's 2022 Twitter acquisition "are back on X." Yaccarino did not go into any further detail to back up the data point, and X did not immediately respond to Ars' request to comment. But Yaccarino's statistic seemed to bolster claims that X had made since Donald Trump's re-election that advertisers were flocking back to the platform, with some outlets reporting that brands hoped to win Musk's favor in light of his perceived influence over Trump by increasing spending on X.

In the wake of the successful Nintendo Switch and Valve Steam Deck, we have seen a wave of PC-based, Android-based, and even FPGA-based handheld gaming systems that can sometimes be hard to tell apart. The upcoming Atari GameStation Go sets itself apart with what we're relatively sure is a first for portable gaming: built-in trackball, spinner, and number pad controls. Gamers who cut their teeth after 1990 or so might not remember an era when arcade and home console games often relied on controls that went beyond the usual D-pad/joystick and action buttons.

The Raspberry Pi foundation has spent the last year filling out the Pi 5 lineup—in August, we got a cheaper $50 version with 2GB of RAM, and in December, we got the Pi 500, a Pi-inside-a-keyboard intended specifically for general-purpose desktop use. Today, the Pi 5 board achieves what may be its final form: a version with 16GB of RAM, available for $120. The 16GB version of the Pi 5 includes the revised "d0" stepping of the Pi 5's BCM2712 processor.

Supporters of Chromium-Based Browsers sounds like a very niche local meetup, one with hats and T-shirts that barely fit the name. But it's really a "neutral space" for funding and support, corralling together some big names with a stake in the future of Chrome's open source roots, Chromium. The Linux Foundation, a nonprofit started in 2000 that has grown to support a broader range of open source projects, spurred the initiative.

The Internet has become the most prevalent communications technology the world has ever seen. Though there are more fixed and mobile telephone connections, even they use Internet technology in their core. For all the many uses the Internet allows for today, its origins lie in the cold war and the need for a defense communications network that could survive a nuclear strike.