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Ready for a fresh set of puzzles? Click here for the January/February Puzzle Corner, brought to you with a special Mystery Hunt twist by guest editor Dan Katz ’03. This column includes solutions to three September/October 24 problems. Find solutions to the other three problems here.

Here are solutions for the three bonus problems that appeared in the September/October 2024 Puzzle Corner column we guest edited. Solutions for S/O2, S/O4, and S/O6 are below; those for S/O1, S/O3, and S/O5 can be found here. S/O2. Frank notes that a repunit Rk is a decimal integer consisting of the digit 1 repeated…

This is today’s edition of The Download, our weekday newsletter that provides a daily dose of what’s going on in the world of technology. The next generation of neural networks could live in hardware Networks programmed directly into computer chip hardware can identify images faster, and use much less energy, than the traditional neural networks that underpin…

This article first appeared in The Checkup, MIT Technology Review’s weekly biotech newsletter. To receive it in your inbox every Thursday, and read articles like this first, sign up here. Later today, around 10 minutes after this email lands in your inbox, I’ll be holding my four-year-old daughter tight as she receives her booster dose of the MMR…