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Two Degrees: Guardrail? Or Guide Rail to Disaster?

by Kent Peacock

The idea that 2⁰C is a safe guardrail against global heating was a guesstimate by an economist almost fifty years ago, and it had a sketchy scientific basis even at that time. In November 2023, a consortium comprised of many of the top glaciologists and climate scientists in the world published a report entitled “The State of the Cryosphere 2023—Two Degrees is Too High.” (See also the review on Carbon Brief.)  The only hope of preventing catastrophic sea-level rise,


Icebreakers in the Arctic: An Overlooked Environmental Concern

by Johanna Cohn

Global heating has a greater impact on the Arctic than the rest of the planet. In fact, the Arctic is warming at a rate almost twice the global average. This is due to Arctic ice’s high albedo, meaning the ice reflects a tremendous amount of sunlight into the atmosphere. As the ice melts, the sea water absorbs more sunlight than it reflects. The resulting water subsequently warms and evaporates,