But the empire offers a warning, too. The frozen soil—permafrost—holds the single largest carbon reservoir on land. Twice as much as the atmosphere. As it thaws, it releases methane and CO2. And also, perhaps, something else.
“The ice sheet is not eternal,” says paleoclimatologist Dr. Helena Voss. “It’s a transient feature of Earth’s history. And right now, we are forcing it to retreat faster than it has in 15 million years.” empire beneath the ice pdf
The true empire beneath the ice, then, is not a lost civilization of gold and glory. It is a library of climate data, a morgue of lost expeditions, a cradle of extremophile life, and a freezer of ancient pathogens. It is a record of what Earth has been—and a prophecy of what it could become. But the empire offers a warning, too