Mosquitos began biting humans more than a million years ago | An analysis of 38 modern mosquitoes’ DNA suggests an ancestral mosquito species developed a preference for feeding on early humans between 2.9 and 1.6 million years ago,

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If a player gets all four words in a set correct, those words are removed from the board. Guess wrong and it counts as a mistake—players get up to four mistakes until the game ends.

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