One more bad news, global warming also brings a potential catastrophe for our planet, namely the melting of methane hydrates: frozen methane stored in the form of ice. The numbers were staggering: 3,000 times that of methane that currently exist in the atmosphere. Planet earth kept frozen methane in large quantities called methane hydrates, or methane clathrates. Methane hydrates are found mostly in the north pole and south pole, where water temperatures less than 0 degrees Celsius, or the seabed at a depth of more than 300 meters, where the water temperature in the range of 20 Celsius.