The 'climate archive': how scientists study the ancient past

But using ice cores and other ancient data points allows scientists to peer much deeper into the past, and establish that the climate today is likely warmer than it has been in 120,000 years.

(FILES) A herdsmen collects water from a hole for his cattle in Bouli Lewe on May 1, 2024. Temperatures passed 50 degrees Celsius (122 Fahrenheit) in northern India as an unrelenting heatwave triggered warnings of water shortages and heatstroke. (AFP)