Why is it so hot in winter? Thank you for your questions.

Because the earth is affected by the greenhouse effect of carbon dioxide, it gets hotter every year, and now it doesn't feel cold in winter. The ice at the poles of the earth is also melting rapidly. It is estimated that in the near future, more than half of the earth will be flooded and many countries will lose their homes. At present, some small island countries have been flooded and have to emigrate.