# A concrete plan for sustainable cement

- Institution: TED
- Department: TED Countdown: Overcoming Dilemmas in the Green Transition
- Speaker: Ryan Gilliam
- Year: 2024
- Level: For everyone
- Language: English
- Subjects: Earth and environment
- Source: [TED](https://www.ted.com/talks/ryan_gilliam_a_concrete_plan_for_sustainable_cement)
- Licence: [CC BY-NC-ND 4.0](https://creativecommons.org/licenses/by-nc-nd/4.0/) (Non-commercial use only, and no changed versions.)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

Cement is one of the most-consumed materials on Earth — second only to water — and it accounts for a whopping eight percent of the world's carbon pollution. What if we could turn this climate villain into a hero? Clean tech innovator and serial entrepreneur Ryan Gilliam reveals his company's surprisingly simple process for transforming waste from the cement-making process back into limestone using existing infrastructure, creating a competitive and eco-friendly product that could pave the way for gigaton-scale climate solutions.

## Lectures

1. [A concrete plan for sustainable cement](https://invisiblenetwork.ai/learn/ted/ryan_gilliam_a_concrete_plan_for_sustainable_cement/abbf212dd11f), 6 min (TED's player)