Ask HN: What Hidden Gems in the Science and Tech World You Might Be Missing?

In the fast-paced world of technology and science, it's easy to get caught up in the buzz of mainstream advancements. Yet, often it's the lesser-known discoveries and innovations that pave the way for groundbreaking shifts. Whether it's an obscure paper, a niche tech startup, an unsung scientist making waves - or even just a transformative tool - I'm curious: What are those "hidden gems" you've come across that the rest of us might be overlooking? Share your insights and let's shine a light on the underrated and the underappreciated!