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The objects date from the end of a warm interglacial period 300,000 years ago, about when early Neanderthals were supplanting Homo heidelbergensis, their immediate predecessors in Europe.

The AWG demonstrated "beyond a reasonable doubt" that the "relatively stable interglacial conditions" that existed since the start of the Holocene Epoch 11,700 years ago no longer exist because of human activity; that the changes are irreversible; that geological strata associated with these changed conditions are "distinct from Holocene strata"; and that the plutonium concentrations from the stratotype section at Crawford Lake, Canada has been confirmed by precisely similar results in strata around the world.

In the years that followed, extensive excavations have gradually yielded numerous wooden objects from a layer dating from the end of a warm interglacial period 300,000 years ago.

The thallium isotope ratios showed the global ocean lost oxygen overall during the last ice age compared to the current warmer interglacial period.

Lau used her models to predict how different ice sheet conditions during the last interglacial would have affected the octopuses’ genomes.