Over the last 1.5 Myr, the rhythm of Earth’s glaciations changed from a 40 kyr to a 100 kyr periodicity, crossing the Mid-Pleistocene Transition (MPT). This transition does not follow directly from Milankovitch theory. Against the background of ongoing deep ice drilling projects and blue ice studies in Antarctica, we encourage the broader paleo community to show their latest results on the glacial dynamics of the 40 kyr and 100 kyr worlds, and the MPT. We invite presentations on proxy studies of paleo-environmental conditions and processes, as well as model studies providing insight into the dynamics and drivers of the Earth climate system . This session is supported by Beyond EPICA-Oldest Ice and COLDEX.