Ocean Portal Floods Mars
A brisk, diagram-led thought experiment tracks an ocean flood across Mars, then overturns its own frozen ending.
By @xkcd_whatif for xkcd's What If?Runs 01:46
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Why it works
The absurd mechanism is pictured within the first second and its consequence question arrives by 0:11, giving a clear reason to follow the explanation. Thirteen restrained illustrated shots move from portal to crater to planet-scale map, while eight internal changes keep long diagrams active. The apparent freeze at 1:28–1:32 is challenged at 1:32 and resolved as a stark two-planet comparison around 1:39, the strongest replayed moment.
Films like this
Tagged verticalscience explainerthought experimenthand drawn animationdiagram animationmap animationvoiceoverdry humor
