World's 'deadliest' island is seriously snake-infestedAn island off the coast of Sao Paolo, Brazil, is home to one of the deadliest snakes on Earth—and there are a lot of them. Some believe there's a golden lancehead viper for every square meter of Ilha de Queimada Grande, or as many as 4,000 of them, Smithsonian reports; others say there are five per square meter, the Wall Street Journal notes.
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