<span>the answer is The planet suffered from hot and cold climatic conditions.
In the past, the Average earth temperature is indeed moving up and down, but the movement is not deviationg from 0.5 C on average.
While he average change that The earth experience in recent years has became drastic compared to the ancient years.</span>
The most popular form of entertainment after world war 1 was the radio
I hope this helps :)
