Source: Nature
An international team of scientists has returned from the heart of West Antarctica with 228 metres of ancient rock and mud, the longest core ever retrieved from below an ice sheet.
Preliminary dating, based on the presence of fossilized algae that only existed during specific geological periods, suggests that the core represents an archive of the past 23 million years. This includes periods when Earth’s average surface temperature was hotter than today’s — and higher than the temperature projected for 2100 under current global climate policies.
