ClimateWire: In a fragile landscape where footsteps leave an imprint for years, Jennifer Baltzer stood and surveyed the surrounding bog of green sphagnum moss. Black spruce trees tilted here and there like drunkards.
Using a metal rod, Baltzer, an ecologist with Wilfrid Laurier University in Waterloo, Ontario, pierced the ground near a spruce.
"You are jamming into ice there," she said. Without that freeze, the unstable spruce trees would entirely lose their footing and drown.
Goose Lake is at the knife's...