Jan 30, 2023
Thomas Goreau works to protect the earth from climate change -- both onland and in the oceans, where he is trying to save coral reefs. Joanna Campe is director of Remineralize the Earth, an NGO promoting the use of rock dust soil amendments. Tom Vanacore owns a quarry that supplies rock dust to farmers. Goreau notes...
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...
Jan 17, 2023
Lawrence Martin in a singer and Canadian politician of Cree heritage. Brian von Herzen is an expert on ocean permaculture - especially kelp farming. Peter Wadhams is an expert on Arctic sea ice and methane. These people discuss two potential projects -- to refreeze parts of Hudson Bay year-round, and to harvest kelp...
Jan 14, 2023
In geologic history, extinctions have occurred after high levels of atmospheric CO2, when oceans are stratified and archae were well fed and proliferated, producing hydrogen sulfide, a poison often called "swamp gas." Here Franz Oeste, Brian von Herzen and Paul Beckwith discuss the possibility that current conditions on...
Jan 10, 2023
Stephen Sheppard was a founder of the Urban Forestry department, U of British Columbia, where Lorien Nesbitt is now an assistant professor. David Price retired after a career in forestry modeling for Canada's Natural Resources department. We discuss with several Pugwashites the health challenges of urban trees and the...