After dinosaurs became extinct due to environmental changes caused by meteorite impacts at the end of the Cretaceous Period of the Mesozoic Era, the climate eased into the Tertiary Period. However, from the late Miocene onwards, the temperature gradually decreased, and glaciers began to appear.
After the Pliocene, the temperature dropped even more as the Quaternary started to. As a result, Earth's glaciers have become more massive. These climate changes have had a significant impact on human evolution and development. But did scientists accurately measure the temperature up to several million years ago?

00:00 Introduction
01:12 The White Cliffs of Dover and Paleothermometer's secret
02:37 Marine Snow
04:34 The depths of the sea and Corer
06:24 Finding a Paleothermometer
08:49 Oxygen Isotope Thermometer
11:29 Emiliani's Paleothermometer
15:37 Improvements by Nicholas Shackleton

Narrator: jtakeith
#Iceage #paleothermometer #paleotemperature #coccolith #marinesnow