Riset itu justru memperlihatkan bahwa penyebab dominan proses penutupan es adalah anjloknya kadar karbon dioksida atmosfer sampai ke tingkat sebelum masa Revolusi Industri di akhir abad ke-18.
The research exactly shows that the dominant cause of the process of ice cover up is the drastic decrease of the level of atmospheric carbon dioxide down to the level found before the Industrial Revolution at the end of the 18th century.