The current era is called the Cenozoic era.
Cenozoic era refers to the geological time period that extends from 65 million years ago to present-day.
Answer:
I think this is the answer
Planes generally fly within the troposphere or lowest level of the atmosphere and which extends mostly about 6 miles vertically from the earth's surface but occaisonally up to 12 miles and it is where the clouds form within this sphere.
glaciers/ice caps should be the answer