Why does every mammal get 1B heartbeats in their life? [video]
By binyu · 2026-07-26 · 4 points · 0 comments
https://www.youtube.com/watch?v=tL9Lw250spc
By binyu · 4 points · 0 comments · on Hacker News, read on BetterNews.
Open the full discussion on BetterNews