You asked about Climate
12 people built something like it. 1 is gone.
That is 9% of the ones whose fate we could settle, against 23% across the whole register. 1 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2022-06-01 | YCPaces Agentic AI for Power Projects and AI Infrastructure · paces.com | still up |
| 2020-01-01 | YCPowerX AI powered sensors that save energy, water and emissions · powerx.co | acquired |
| 2021-06-01 | YCFerveret Nuclear-inspired cooling that turns wasted power into more AI compute · ferveret.com | still up |
| 2019-06-01 | YCEARTH AI Predictive Explorer and Driller for Critical Metal Deposits · earth-ai.com | still up |
| 2020-01-01 | YCAtmo Ultra-precise AI weather forecasting. · atmo.ai | still up |
| 2021-06-01 | Battery Observability Platform for Electric Vehicles · coulomb.ai | still up |
| 2023-06-01 | YCGuac AI-powered forecasting & replenishment for grocery · guac.com | still up |
| 2019-01-01 | AI driven professional engineering firm · traverse.ai | gone |
| 2020-01-01 | AI that tells mining companies where to mine to maximize profits · stratum.ai | still up |
| 2024-01-01 | YCSpark AI-powered workflows for energy infrastructure · sparkhq.ai | still up |
| 2024-01-01 | YCPrecip High precision AI weather models · precip.ai | still up |
| 2025-01-01 | YCAstro The world’s first AI energy developer · astroenergy.ai | still up |
How this compares
The register re-probes every domain it holds. Some that answered last month stop answering. We send that list — what went quiet, and what it was — once a month. Nothing else.
How this was made. Show HN entries are every post from 2021 to 2023 with at least five points that linked to its own domain; code hosts and free hosting are excluded, because a repository outlives the effort behind it. Product Hunt entries needed 100 votes — a far higher bar, so they are the promoted top slice rather than a like-for-like sample. Both are judged by asking the domain whether it still answers: gone means it no longer resolves, refuses the connection, serves a parking page, or says plainly that it shut down. An HTTP error is not counted as gone — a server answering 404 is one somebody still pays for, and an audit of 25 gone-calls found two such sites alive with only a moved homepage. Y Combinator entries use the status YC publishes itself, which is why only those can say acquired. Squatted domains — a lapsed name now serving somebody else's site — are not detected, so these figures run slightly low.