"Such a transition to a glacial state in 10,000 years' time is very unlikely to happen, because human emissions of carbon ...

The subtle changes in orbit (eccentricity), the planet’s inclination compared to the orbit (obliquity), and the change in the direction of Earth’s rotational axis (precession) were possible ...

This 23,000-year precession of the equinoxes changes the orientation of the planet relative to its location in orbit (Figure 5C). When all three Milankovitch cycles reinforce each other ...