# Microsoft expands its deal with UNDO to remove 15,000 tonnes of CO2 by rock weathering in the UK and Canada

Canonical page: https://technooptimist.io/stories/microsoft-expands-its-deal-with-undo-to-remove-15-000-tonnes-of-co2-by-4102619c
Date: 26 Sep 2024
About: [UNDO](https://technooptimist.io/companies/undo.md) · [UNDO Enhanced Rock Weathering](https://technooptimist.io/agriculture/undo-rock-weathering.md)
Original source: https://bettersociety.net/Microsoft-partnership-aims-to-remove-15000-tonnes-of-CO2-from-the-atmosphere.php

Microsoft signed a follow-on agreement with UNDO to permanently remove 15,000 tonnes of CO2, using crushed basalt on UK farmland and wollastonite in rural Canada. It builds on their first deal in 2023 for 5,000 tonnes and also funds scientific research into enhanced rock weathering.

## Key facts

- Microsoft's Brian Marrs, senior director of energy markets, announced the deal
- Three times the volume of the first Microsoft deal

---

The Techno Optimist tracks every frontier of technology, program by program: https://technooptimist.io/ (a Markdown version of any page: add .md to its URL; site map for agents: https://technooptimist.io/llms.txt).
Data API (JSON, realtime stream): https://technooptimist.io/developers. People read 5 pages free, then Reader $10/month; these Markdown pages are open to agents.