Global warming is now recognized by almost all scientists, and they recognize that humans are increasing the rate of global warming. Global warming has become a major concern of humanity since the middle of the 20th century. It was namely then that the first increase in the Earth’s temperature was registered. The temperature became less than one degree higher, but on a global scale, this is very high. Global warming is increasing each year. Humanity's contributions to global warming are in the form of greenhouse gases, mainly carbon dioxide (CO2) and methane (CH4), which prevent heat from escaping the earth. The result is increasing temperatures, up to 4 degrees, across the planet. In such a condition, many forms of plant and animal life can and will die.