Scientists have found that seasonally flowing streams fringe much of Antarctica’s ice. Here, each “X” represents a separate drainage identified by the researchers.

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But poisoning entire water bodies – especially flowing streams — severely alters biodiversity and causes a broad loss of taxa and species from the aquatic ecosystem.

The team found that a threaded network of 700 pools, ponds, channels, rivers and streams flowing across the ice fed outflows on all sides of the continent.