Five key themes guided this conversation with no strict goalposts and guardrails, so the conversation could follow its own course. Here's what to expect in this episode that's focused on Permafrost.

Explains active retrogressive thaw slumps (RTS) that were found along the Alaska and Dempster highways in the Yukon.
His experience in geohazard mapping in Northern Canada and what got him interested in climate-driven hazards. For all you geology enthusiasts, look out for the Klondike connection and paleontology. Almost one million years of permafrost archive data about Pleistocene Beringia - gold rush to really old “paleo” rush! Dawson was unglaciated - and that tells you something!
The formation and degradation of permafrost (the process focus), including permafrost mapping in Northern Quebec and the Yukon. Is there a connection between permafrost distribution/thawing and wildfire propensity?
How do the indigenous communities feel about the changing landscape and how are they preparing for changes in the soil with respect to their traditional practices and food security  - for example, the shrubification of the region that's replacing the lichen cover and the subsequent change in the migratory pattern of the caribou?
Blending evidence-based and community-based interventions: How to facilitate the integration of science and traditional knowledge toward climate adaptation? Your host is curious about his 2018 project where he studied how the traditional land use by the Vuntut Gwitchin First Nation of Old Crow was affected by this changing landscape? Thaw sensibility - map of traditional land use (only known by the community) and map of permafrost cover change to inform adaptation mechanisms, including infrastructure needs. A lake that drained due to permafrost degradation and the indigenous people losing their traditional fishing spot.
The role of space-based earth observation (EO) in climate adaptation. Characterization of vegetation to inform the change dynamics and to identify potential permafrost sites (correlating the distribution of permafrost with a specific type of vegetation). Letty getting curious about the connection between peatland and permafrost (through wildfire-induced destabilization of the black spruce trees that collaborate with moss and lichen to perpetuate the usual cycle of life that now stands threatened).
The conversation continues with the use of drones to develop orthomosaics and digital elevation models (DEMs) of areas in the far north where satellite imagery is scarce or blurry! Can get the depth of the peat and the flow direction of water to better understand the impact on permafrost (the latter suffers in the presence of the former because water brings along its heat source that accelerates thawing). Perhaps another opportunity for water heatmaps (hydrological network that could potentially drain the permafrost in northwestern Canada).
How can we contribute to his research effort and other local efforts (their website: Yukon University Research Centre). A key stewardship message for his listeners. Letty learns that her leave-no-trace, responsible tourism efforts are threatening at best!

The background music that you might hear for about 1.3 minutes (toward the end) is from this YouTube video. Letty used the French version of O Canada for her rehearsal.