How The Scientist Learn About Past Climates?

The weather & climate shared the similar elements for example the air temperature, the humidity, the type and amount clouds and precipitation, air pressure wind speed and direction.
The weather records go back about 130 years.
The time scale scientist use to measure the climate is by the geologic time scales.

The scientist the past climate clues in the rocks fossils and plant fossils records.
Examination of  fossils and pollen records, using core samples from the ocean floor glaciers and the polar ice caps, and examining growth ring on trees are 3 techniques that scientist use to measure the past climate.
Temperature, precipitation, wind patterns these techniques provide clues to the past climate.

 
VIDEO QUESTIONS
Where was that?
Antarctica ocean north pole
Whats the ship name?
USCGhealy
How long did they spend investigating the water?
1 hour but they do everytime