The markers engraved on the structures indicate the CO2
levels that correspond to each section of the ice core. Pre-
industrial data, simply scored on the tools, proved to be
within norm in the past 800,000 years. The values of CO2
recorded in ice stratified post-industrialisation, engraved in
orange, reflect the state of planetary instability and inequality
induced by anthropogenic climate crisis.
The unprecedented high value of CO2 recorded in 2024 of
422 ppm stands as an ultimatum that we shall, as humanity,
urgently decarbonise to retain the global temperature below
the 1.5 degrees Celsius set by the Paris Agreement and
safeguard life on Planet Earth for all species.
