Jan 23, 2023
Karen Scrivener is a professor in Switzerland who specializes in concrete research. Peter Fiekowsky is an entrepreneur and writer about climate restoration. Martin Halliwell advises builders on the use of innovative concrete with low carbon footprint. They agree that too much concrete is used by designers who are overly conservative, and that the rebar is a disadvantage for sustainability. They do not agree on the possible costs and feasibility of producing carbon-negative concrete. Karen thinks the extraction of calcium from seawater is far too expensive. For the video, audio podcast, transcript and public comments: https://tosavetheworld.ca/episode-541-carbon-concrete-and-climate.