Final answer:
Humans live and experience climate in the troposphere, which is the lowest layer of the atmosphere.
Step-by-step explanation:
The layer of the atmosphere in which humans live and experience climate is called the troposphere. The troposphere is the lowest layer of the atmosphere and extends from the Earth's surface up to about 6 miles or 10 kilometers in altitude. Virtually all human activities occur in the troposphere, and it is responsible for the conditions that allow life to exist on Earth.