October 14, 2025

The Download: aging clocks, and repairing the internet

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. How aging clocks can help us understand why we age—and if we can reverse it Wrinkles and gray hairs aside, it can be difficult to know how well—or poorly—someone’s body is truly aging.…

The Download: our bodies’ memories, and Traton’s electric trucks

October 10, 2025
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. How do our bodies remember? “Like riding a bike” is shorthand for the remarkable way that our bodies remember how to move. Most of the time when we talk about muscle memory, we’re…

How do our bodies remember?

October 10, 2025
MIT Technology Review Explains: Let our writers untangle the complex, messy world of technology to help you understand what’s coming next. You can read more from the series here. “Like riding a bike” is shorthand for the remarkable way that our bodies remember how to move. Most of the time when we talk about muscle memory, we’re…

This test could reveal the health of your immune system

October 10, 2025
Attentive readers might have noticed my absence over the last couple of weeks. I’ve been trying to recover from a bout of illness. It got me thinking about the immune system, and how little I know about my own immune health. The vast array of cells, proteins, and biomolecules that works to defend us from…