We know the past environments from analysis of fossils. Seashells, which are made of calcium carbonate, sequester significant amounts of carbon.

Wes Eaglechild is a cliffhanger, rappelling down riverside escarpments to collect million-year-old stones known as ammolite. Eaglechild, from Blood Tribe reserve 148, has been rock collecting ...

The discovery of fossilized worm burrows in ancient rocks from the the Northwest Territories is challenging what scientists have long thought about prehistoric life deep under the ocean.