Data Talks

During the last 1 million years the average glacial cycle lasted 92,900 years & the average interglacial period was 18,200 years. The interglacial temperature rose on average 13.5C (global data). The average glacial period, or period of freezing, lasted about 74,700 years from… pic.twitter.com/0SBATfmpmW

— Peter Clack (@PeterDClack) July 4, 2025