Dr. Klaus Lackner was one of the first scientists to explore how to remove excess CO2 from the atmosphere. In this wide-ranging masterclass interview, Klaus and host Dan Miller discuss the feasibility, scalability, safety, and cost of large-scale Direct Air Capture (DAC) and sequestration of atmospheric CO2. Klaus Lackner is the director of Center for Negative Carbon Emissions and a professor in the School of Sustainable Engineering and the Built Environment of the Ira A. Fulton Schools of Engineering at Arizona State University. Link to Klaus' homepage: https://globalfutures.asu.edu/cnce/profile/kslackne/ Link to Climate Chat Club YouTube homepage: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg Timestamps: 00:00:00 Introduction 00:00:50 Start of Interview 00:02:16 Klaus' background/Why carbon capture? 00:06:03 Moisture-swing carbon capture 00:09:18 Does carbon capture use too much energy? 00:10:51 Is there room underground for all our CO2? 00:12:53 Iceland 00:16:18 Other CO2 storage techniques including saline aquifers 00:19:09 Markets for CO2 00:20:07 Incentives to capture CO2 00:22:20 CO2-to-fuels 00:26:05 Two markets for air capture 00:26:45 1 part per million = 15 gigatons of CO2 00:27:26 Is carbon capture real? 00:28:59 Getting down to $50/ton 00:34:07 Is carbon capture environmentally safe? 00:36:51 The scale needed 00:38:58 $2 trillion/year for 40 gigatons/year 00:41:54 Is carbon capture a moral hazard? 00:46:19 "Natural" CO2 capture including planting trees 00:52:04 Beginning of Audience Q&A 00:52:16 CO2 into cement 00:54:14 What to do now to scale CO2 capture? 00:57:48 Area needed for natural CO2 capture using micro-algae 01:02:00 What are "Mechanical Trees"? 01:06:32 How to support scaling of CO2 capture 01:12:24 Impacts on oxygen and soils 01:16:09 What about ocean capture of CO2? 01:19:48 Embodied carbon and energy in CO2 capture systems 01:30:31 CO2 capture from air vs. ocean 01:33:29 CO2 capture prizes 01:35:22 Biomass solutions 01:41:42 How to convince people opposed to carbon capture? 01:45:03 Summing up 01:47:17 Out-tro 01:47:29 END
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