The best of Hacker News - June 30, 2025

1.
I made my VM think it has a CPU fan

479 points

2.
Ask HN: What Are You Working On? (June 2025)

141 points

3.
4-10x faster in-process pub/sub for Go

127 points

4.
The $25k car is going extinct?

124 points

5.
We accidentally solved robotics by watching 1M hours of YouTube

111 points

6.
Finding a former Australian prime minister’s passport number on Instagram (2020)

106 points

7.
Touching the back wall of the Apple store

105 points

8.
Revisiting Knuth's "Premature Optimization" Paper

100 points

9.
The Book of Shaders

83 points

10.
Cell Towers Can Double as Cheap Radar Systems for Ports and Harbors (2014)

69 points

11.
Continuous Glucose Monitoring

49 points

12.
Anticheat Update Tracking

36 points

13.
ICE test train reaches speeds of up to 405.0 km/h

32 points

14.
Gridfinity: The modular, open-source grid storage system

31 points

15.
Amber insect fossils reveal "zombie" fungi likely lived alongside dinosaurs

26 points

16.
Bought an Ampere Altra System

25 points

17.
Use keyword-only arguments in Python dataclasses

23 points

18.
NativeJIT: A C++ expression –> x64 JIT

20 points

19.
Building untrusted container images safely at scale

11 points

20.
That Dropped Call with Customer Service? It Was on Purpose

9 points

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