Skip to main content
Back to Show
PBS News Hour

This cement alternative absorbs carbon dioxide like a sponge

Cement has been called the foundation of modern civilization, the stuff of highways, bridges, sidewalks and buildings of all sizes. But its production comes with a huge carbon footprint. Environmental chemist David Stone was seeking a way to keep iron from rusting when he stumbled upon a possible substitute that requires significantly less energy. Special correspondent Kathleen McCleery reports.

Sign up now for inspiring and thought-provoking media delivered straight to your inbox.
Support Provided By
Season
June 3, 2025 - PBS News Hour full episode
57:46
June 3, 2025 - PBS News Hour full episode
June 2, 2025 - PBS News Hour full episode
57:46
June 2, 2025 - PBS News Hour full episode
June 1, 2025 - PBS News Weekend full episode
24:09
June 1, 2025 - PBS News Weekend full episode
May 31, 2025 - PBS News Weekend full episode
24:09
May 31, 2025 - PBS News Weekend full episode
May 30, 2025 - PBS News Hour full episode
56:34
May 30, 2025 - PBS News Hour full episode
May 29, 2025 - PBS News Hour full episode
57:46
May 29, 2025 - PBS News Hour full episode
May 28, 2025 - PBS News Hour full episode
57:46
May 28, 2025 - PBS News Hour full episode
May 27, 2025 - PBS News Hour full episode
57:46
May 27, 2025 - PBS News Hour full episode
May 26, 2025 - PBS News Hour full episode
57:46
May 26, 2025 - PBS News Hour full episode
May 25, 2025 - PBS News Weekend full episode
26:45
May 25, 2025 - PBS News Weekend full episode
May 24, 2025 - PBS News Weekend full episode
26:45
May 24, 2025 - PBS News Weekend full episode
May 23, 2025 - PBS News Hour full episode
57:46
May 23, 2025 - PBS News Hour full episode
Active loading indicator