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High strength bio-concrete for the production of building components

https://www.nature.com/articles/s44296-023-00004-6
35•PaulHoule•4d ago

Comments

jszymborski•1h ago
Sounds super interesting and promising.

Some of the ecological challenges presented by bio-concrete production, as outlined in the paper, is the high energy needs for synthesizing urea, and effluent run off.

Other challenges stated are the corrosion of steel reinforcements from the calcium chloride. One would need corrosion resistant reinforcements.

PaulHoule•1h ago
Corrosion is a problem with conventional reinforced concrete. The other day I saw an article about an MIT prof who was making rebar with a stainless steel outer layer that holds up better.

Square Theory

https://aaronson.org/blog/square-theory
233•aaaronson•3h ago•44 comments

Pyrefly vs. Ty: Comparing Python's Two New Rust-Based Type Checkers

https://blog.edward-li.com/tech/comparing-pyrefly-vs-ty/
139•edwardjxli•4h ago•57 comments

Launch HN: Relace (YC W23) – Models for fast and reliable codegen

48•eborgnia•3h ago•23 comments

How a hawk learned to use traffic signals to hunt more successfully

https://www.frontiersin.org/news/2025/05/23/street-smarts-hawk-use-traffic-signals-hunting
253•layer8•7h ago•78 comments

In defense of shallow technical knowledge

https://www.seangoedecke.com/shallow-technical-knowledge/
40•swah•2d ago•15 comments

LumoSQL

https://lumosql.org/src/lumosql/doc/trunk/README.md
184•smartmic•8h ago•71 comments

BGP handling bug causes widespread internet routing instability

https://blog.benjojo.co.uk/post/bgp-attr-40-junos-arista-session-reset-incident
195•robin_reala•8h ago•89 comments

Show HN: Malai – securely share local TCP services (database/SSH) with others

https://malai.sh/hello-tcp/
64•amitu•4h ago•24 comments

Roundtable (YC S23) Is Hiring a Member of Technical Staff

https://www.ycombinator.com/companies/roundtable/jobs/ZTZHEbb-member-of-technical-staff
1•timshell•1h ago

CSS Minecraft

https://benjaminaster.com/css-minecraft/
1051•mudkipdev•1d ago•117 comments

The Art of Fugue – Contrapunctus I (2021)

https://www.ethanhein.com/wp/2021/the-art-of-fugue-contrapunctus-i/
67•xeonmc•5h ago•34 comments

DuckLake is an integrated data lake and catalog format

https://ducklake.select/
148•kermatt•5h ago•52 comments

Outcome-Based Reinforcement Learning to Predict the Future

https://arxiv.org/abs/2505.17989
52•bturtel•5h ago•7 comments

Running GPT-2 in WebGL: Rediscovering the Lost Art of GPU Shader Programming

https://nathan.rs/posts/gpu-shader-programming/
14•nathan-barry•1h ago•3 comments

Why Cline Doesn't Index Your Codebase (and Why That's a Good Thing)

https://cline.bot/blog/why-cline-doesnt-index-your-codebase-and-why-thats-a-good-thing
110•intrepidsoldier•5h ago•79 comments

Comparing Docusaurus and Starlight and why we made the switch

https://glasskube.dev/blog/distr-docs/
11•pmig•4d ago•2 comments

GitHub MCP exploited: Accessing private repositories via MCP

https://invariantlabs.ai/blog/mcp-github-vulnerability
384•andy99•1d ago•256 comments

The Hobby Computer Culture

https://technicshistory.com/2025/05/24/the-hobby-computer-culture/
50•cfmcdonald•3d ago•23 comments

Show HN: Free mammogram analysis tool combining deep learning and vision LLM

http://mammo.neuralrad.com:5300
7•coolwulf•4h ago•7 comments

Right-Truncatable Prime Counter

https://github.com/EbodShojaei/Right-Truncatable-Primes
6•rainmans•3d ago•1 comments

Worlds first petahertz transistor at ambient conditions

https://news.arizona.edu/news/u-researchers-developing-worlds-first-petahertz-speed-phototransistor-ambient-conditions
76•ChuckMcM•2d ago•48 comments

Just make it scale: An Aurora DSQL story

https://www.allthingsdistributed.com/2025/05/just-make-it-scale-an-aurora-dsql-story.html
67•cebert•7h ago•21 comments

Show HN: Lazy Tetris

https://lazytetris.com/
246•admtal•15h ago•105 comments

Revisiting the Algorithm That Changed Horse Race Betting (2023)

https://actamachina.com/posts/annotated-benter-paper
87•areoform•9h ago•35 comments

The Myth of Developer Obsolescence

https://alonso.network/the-recurring-cycle-of-developer-replacement-hype/
247•cat-whisperer•8h ago•278 comments

From OpenAPI spec to MCP: How we built Xata's MCP server

https://xata.io/blog/built-xata-mcp-server
20•tudorg•2d ago•11 comments

Trying to teach in the age of the AI homework machine

https://www.solarshades.club/p/dispatch-from-the-trenches-of-the
379•notarobot123•23h ago•535 comments

LiveStore: State management based on reactive SQLite and built-in sync engine

https://livestore.dev
113•akoenig•9h ago•28 comments

Highlights from the Claude 4 system prompt

https://simonwillison.net/2025/May/25/claude-4-system-prompt/
263•Anon84•21h ago•72 comments

Lossless video compression using Bloom filters

https://github.com/ross39/new_bloom_filter_repo/blob/main/README.md
321•rh3939•1d ago•109 comments