minus-squareDiarrhea_Eruptions@lemmy.worldtoWorld News@lemmy.world•This month is the planet's hottest on record by far – and hottest in around 120,000 years, scientists say | CNNlinkfedilinkEnglisharrow-up19arrow-down1·1 year agoHow do they estimate temps so long ago? What data do they use? linkfedilink
How do they estimate temps so long ago? What data do they use?