Skip to Main Content

This cement alternative absorbs carbon dioxide like a sponge

Clip: 4/13/2015 | 7m 25s

Cement's production comes with a huge carbon footprint.

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.

04/13/2015 | Rating NR

Problems playing video?   | Closed Captioning Feedback

Report a Problem

Before you submit an error, please consult our Video Help page.

Problems playing video?   | Closed Captioning Feedback

Report a Problem

Before you submit an error, please consult our Video Help page.

Major corporate funding for the PBS News Hour is provided by BDO, BNSF, Consumer Cellular, American Cruise Lines, and Raymond James. Funding for the PBS NewsHour Weekend is provided by...

Are budget cuts, Obamacare confusion causing IRS bottleneck?

Clip: 4/13/2015 | 8m 49s | Judy Woodruff interviews Commissioner John Koskinen about these problems. (8m 49s)

Iraqi PM to appeal to U.S. for more firepower and support

Clip: 4/13/2015 | 5m 20s | Special correspondent Jane Arraf, reporting from Baghdad, joins Gwen Ifill. (5m 20s)

Is Jordan Spieth’s Masters win the start of a great rivalry?

Clip: 4/13/2015 | 5m 46s | We look at Spieth’s career and accomplishment with John Feinstein of The Washington Post. (5m 46s)

Jonathan B. Tucker recites his poem 'Live United'

Clip: 4/13/2015 | 2m 38s | Watch Jonathan B. Tucker recite his poem "Live United." (2m 38s)

Jonathan B. Tucker recites his poem 'Live United'

Clip: 4/13/2015 | 2m 38s | Watch Jonathan B. Tucker recite his poem "Live United." (2m 38s)

Why Clinton’s campaign wants us to think we don’t know her

Clip: 4/13/2015 | 8m 21s | Gwen Ifill talks to Amy Walter of the Cook Political Report and Tamara Keith of NPR. (8m 21s)

Providing Support for PBS.org

Learn Moreabout PBS online sponsorship

Support for PBS provided by:

Major corporate funding for the PBS News Hour is provided by BDO, BNSF, Consumer Cellular, American Cruise Lines, and Raymond James. Funding for the PBS NewsHour Weekend is provided by...

or

By creating an account, you acknowledge that PBS may share your information with our member stations and our respective service providers, and that you have read and understand the Privacy Policy and Terms of Use.

Are you sure you want to remove null from My List?