Like most wealthy countries, Canada has committed to achieving carbon neutrality by 2050. Reaching this target requires a fundamental reassessment of our energy system and the abandonment of partial greenhouse gas (GHG) reduction strategies, through energy efficiency, that have dominated the transition in recent years. As we move forward, analyses suggest that achieving this transformation by...
Even though large-scale carbon dioxide removal (CDR) technologies are not yet well-developed and bring a range of risks, they are also recognized as an integral part of any strategy to successfully limit global warming. In this context, I will provide a brief overview of several high-profile climate policy documents [1-3] that describe the current state of CDR technologies, and highlight...
The potential of extreme environmental change driven by a destabilized climate system is an alarming prospect for humanity. But the intricate, subtle ways Earth's climate couples to social and economic systems raise the question of when more incremental climate change signals the need for alarm. Questions about incremental sensitivity are particularly crucial for human systems that are...
Hillslopes in the Canadian High Arctic can express curious features called water tracks, where stone and soil domains self-organize into quasi-linear patterns. Though they physically resemble rills, they are not characterized by sustained surface flows following rainfall or snowmelt; hence, no obvious evidence of active particle transport downslope is observed. This motivates several questions...
