The best of Hacker News - July 27, 2025

1.
Rust running on every GPU

512 points

2.
How we rooted Copilot

283 points

3.
Purple Earth hypothesis

199 points

4.
The natural diamond industry is getting rocked. Thank the lab-grown variety

167 points

5.
What went wrong for Yahoo

143 points

6.
Resizable structs in Zig

103 points

7.
Getting decent error reports in Bash when you're using 'set -e'

90 points

8.
Personal aviation is about to get interesting (2023)

74 points

9.
Teach Yourself Programming in Ten Years (1998)

68 points

10.
Show HN: QuickTunes: Apple Music player for Mac with iPod vibes

66 points

11.
Coronary artery calcium testing can reveal plaque in arteries, but is underused

62 points

12.
Arvo Pärt at 90

61 points

13.
Tinyio: A tiny (~200 line) event loop for Python

57 points

14.
Paul Dirac and the religion of mathematical beauty (2011) [video]

50 points

15.
Low cost mmWave 60GHz radar sensor for advanced sensing

44 points

16.
Torqued Accelerator Using Radiation from the Sun (Tars) for Interstellar Payload

40 points

17.
Fast and cheap bulk storage: using LVM to cache HDDs on SSDs

31 points

18.
Chemical process produces critical battery metals with no waste

11 points

19.
16colo.rs: ANSI/ASCII art archive

10 points

20.
Smallest particulate matter sensor revolutionizes air quality measurement

5 points

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