Scientists came to such conclusions as a result of studies carried out on the basis of modern computer modeling and geological records of temperature in marine sediments. Thanks to chemical deposits on the shells of ancient marine life, one can “read” the temperature change that occurred during their life. To more accurately track temperature fluctuations, experts reconstructed climate changes at intervals of 200 years.
Thus, all states of the climate were tracked for 24 thousand years. What we call global warming today began 150 years ago. There has never been such an intense and large-scale climate change, the cause of which scientists have called an increase in the concentration of greenhouse gases and the retreat of ice sheets. Scientists called this state of the climate unprecedented.