Forests and climate: impacts, mitigation, and adaptation (2021) Protecting and restoring forests is essential for achieving both international climate goals and sustainable development goals. Forests are simultaneously at risk from climate change, contributing to climate change, and part of the solution to climate change.
From moral hazard to risk-response feedback (2021) There has been a reluctance to embrace carbon removal and solar geoengineering, partly due to the perception that these technologies represent what is widely termed a “moral hazard”: that geoengineering will prevent people from developing the will to change their personal consumption and push for changes in infrastructure, erode political will for emissions cuts, or otherwise stimulate increased carbon emissions at the social-system level of analysis. These debates over carbon removal and geoengineering echo earlier ones over climate adaptation. We argue that debates over “moral hazard” in many areas of climate policy are unhelpful and misleading. We also propose an alternative framework for dealing with the tradeoffs that motivate the appeal to “moral hazard,” which we call “risk-response feedback.”
Climate change mitigation, air pollution, and environmental justice in California (2018) Here we assess the air pollution and environmental justice implications of California’s cap-and-trade mitigation program through analysis of (1) the sources of air pollution in disadvantaged communities, (2) emissions-reduction offset usage under the cap-and-trade program, and (3) the relationship between reductions in greenhouse gas emissions and reductions in co-pollutant emissions.
Net-zero emissions energy systems (2018) We examine barriers and opportunities associated with these difficult-to-decarbonize services and processes (such as long-distance freight transport, air travel, highly reliable electricity, and steel and cement manufacturing), including possible technological solutions and research and development priorities.
Unprecedented rates of land-use transformation in modelled climate change mitigation pathways (2018) While these assumed CDR deployments—multi-gigatonne yearly CDR from the atmosphere through bioenergy with carbon capture and storage (BECCS) and afforestation/reforestation—keep ambitious temperature targets in reach, the associated rates of land-use transformation have not been evaluated. Here, we view implied integrated-assessment-model land-use conversion rates within a historical context.
Near-term deployment of carbon capture and sequestration from biorefineries in the United States (2018) Here, we evaluate low-cost, commercially ready CO2 capture opportunities for existing ethanol biorefineries in the United States. The analysis combines process engineering, spatial optimization, and lifecycle assessment to consider the technical, economic, and institutional feasibility of near-term carbon capture and sequestration (CCS).
Forest offsets partner climate change mitigation with conservation (2017) We evaluate California's forest offset program – the first‐ever legally enforceable “compliance” offset program for existing forests – to determine whether offsets (1) provide additional emissions reductions that would not have occurred without the program (called “additionality”) and (2) yield other benefits.