The Martian Polar Caps — A Planet's Record of Its Own Water

A watercolour natural-history episode on the Martian polar caps: Mars's permanent water-ice caps, seasonal carbon-dioxide frost, layered climate archive, ancient rivers and deltas, Korolev crater ice, the disputed south-polar radar signal, atmospheric escape, and the question of where the planet's water went. The Naturalist Atlas observes wildlife, earth, and deep time through measured narration and hand-painted visual essays.