Ask HN: What are you working on? (October 2025)

A simple comment, but wow I really like the look of Bonsai! The lighting, shading and shapes are really beautiful, I think a game made in this would feel really unique

Currently working on expanding the Pacific Northwest’s largest durable carbon removal project using Enhanced Rock Weathering and starting a $1m SAFE fundraising round.

We received data last week verifying we are effectively mineralizing CO2 at a high rate while saving our farmer $135/acre annually in liming costs.

We’ve come this far on grants. Now it’s time to fundraise so we can bankroll our PhDs whilst we secure pre-purchase offtake deals.

If you know of any impact investors or are an offtake buyer at a large company, please email me at zach@goal300.earth

I am working on Tiny Finch, a livechat connected with Slack.

There is nothing special comparing to other livechats, the goals is to offer an affordable and unlimited livechat for small projects and companies.

https://tinyfinch.chat

As usual, I'm divided between too many interests.

Last month:

• wrote my first NEON SIMD code

• implemented adaptive quadrature with Newton–Cotes formulas

• wrote a tiny Markov-chain text generator

• prototyped an interactive pipeline system for non-normalized relational data in Lua by abusing operator overloading

• load-tested and taste-tested primary batteries at loads exceeding those in the datasheet; numerically simulated a programmable load circuit for automating the load testing

• measured the frequency of subroutine calls and leaf subroutine calls in several programs with Valgrind

• wrote a completely unhealthy quantity of commentary on HN

New ideas I'm thinking about include backward-compatible representations of soft newlines in plain ASCII text, multitouch calculators supporting programming by demonstration, virtual machines for perfectly reproducible computations, TCES energy storage for household applications beyond climate control such as cooking and laundry, canceling the harmonic poles of recursive comb filters with zeroes in the nonrecursive combs of a Hogenauer filter, differential planetary transmissions for compact extreme reductions similar to a cycloidal drive, rapid ECM punching in aluminum foil, air levigation of grog, ultra-cheap passive solar thermal collectors, etc. Happy to go into more detail if any of these sound interesting.

i am working on something pretty radical in this space. it is a book of algorithms that derives all the algorithms without telling what the algorithm is. for example for binary search your book quickly went into the low + high / 2 = mid thing. my method is radically different. i take an even sized array then try to actually find it step by step , then take an odd sized array , find it step by step, derive a general hypothesis and then create the formula from it for that algorithm. this is going to be orders of magnitude above any data structures and algorithms books and courses when it comes out. pinky promise