A new study suggests that instead of purposely burying trees in low-oxygen, clay-rich soils on land, rafting logs down arctic rivers and sinking them in the anoxic waters of the Arctic Ocean could be a better strategy. While this idea may cause less emissions and ecological harm than wood vaulting, there are still a lot of unknowns, including the impact on these riverways and the anoxic conditions in the Arctic Ocean itself. Eventually, trees die and are harvested or burned, releasing that long-held carbon dioxide—the key driver of anthropogenic climate change—back into the atmosphere. That said, a new study in the journal suggests that one additional (albeit audacious) step could improve the carbon-trapping powers of boreal forests: Sink them into the Arctic Ocean. This is the basic idea behind a well-known carbon removal technique known as “wood vaulting,” which involves burying woody biomass in anaerobic (clay-rich) pits that essentially lock carbon underground.