The International Ocean Discovery Program (IODP) explores Earth’s climate history, structure, mantle/crust dynamics, natural hazards, and deep biosphere as described in the IODP Science Plan: Illuminating Earth’s Past, Present, and Future. IODP facilitates international and interdisciplinary research on transformative and societally relevant topics using the ocean drilling, coring, and down-hole measurement facilities JOIDES Resolution, Chikyu, and Mission-Specific Platforms (MSP). The deadline is October 1, 2021.