Mathematics of Pianef Earth views our planet through these themes:

• Planet Earth as a physical system: e.g., climate dynamics, oceans, atmosphere, cryosphere. Earth, and space
• Planet Earth as a system supporting life: e.g., mathematical ecology, carbon cycle, food systems, natural resources, and sustainatollity
• Planet Earth as a system organized by humans: e.gv land use, energy, communication, transportation, and socioeconomics
• Planet Eartii as a system at risk: e.g., global change, biodiversity, water, food security, epidemics, and extreme events