Best of 2025

The blog posts Hacker News loved most in 2025. 220 posts.

Science & Space
195

Microplastics: No longer a "maybe"

It’s Already Inside Us Microplastics are not just an environmental problem affecting nature. They’re in our blood [1] , lungs [2] , placentas [3] , brains [4] , and breast milk [5] . Every human tissue scientists have tested so far has come back contaminated. In diseased tissue samples of people with chronic illnesses…