TechCapsules

AI-summarised brief · reviewed before publication

In Alaska’s coastal towns, rising temperatures are thawing permafrost that underpins homes, roads, and pipelines, causing ground subsidence and infrastructure damage. A 2025 study projected $37–$51 billion in repair costs. Engineers now employ drone‑borne very‑low‑frequency electromagnetic (VLF‑EM) surveys to map subsurface ice loss without drilling. The technique detects conductive thawed zones, guiding builders to assess future stability and plan resilient foundations. The approach offers a cost‑effective, non‑intrusive method to monitor permafrost changes critical to Arctic infrastructure.