Reference: 1581 Title: Some Effects of the Earth's Orbital Variations on Climate Summary: The 1987 study in the Journal of the Atmospheric Sciences confirms that Earth's orbital variations significantly influence long-term climate trends. URL: https://journals.ametsoc.org/view/journals/atsc/44/10/1520-0469_1987_044_1351_sewamo_2_0_co_2.pdf