Whose studies first linked Milankovitch cycles to ice ages?

Serbian mathematician Milutin Milankovitch worked in the early 20th century on how variations in Earth’s orbit affect sunlight reaching the planet. He identified cycles in eccentricity, tilt, and precession that influence climate over tens of thousands of years. Later evidence from ocean sediments and ice cores supported his theory and tied it closely to ice-age timing. Today, Milankovitch cycles are a central concept in paleoclimatology.