You will be startled when watching the video describing the process of Earth's hotness in the past 100 years

For more than 100 years, the Earth has become warmer and the average temperature in many parts of the world is constantly increasing to an alarming level.

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Earlier this June, the US Aerospace Administration (NASA) published graphics depicting the global warming trend in the period of 1880-2015.

The temperature on Earth has changed from blue to hot orange around the globe, showing a rise in temperature from a milder average to a warmer average.

In the early 20th century, the Earth appeared mostly blue, but by the mid-1930s orange patches began to appear and became more popular. This shows that the temperature of the Earth is constantly increasing.