How do snakes 'see' in the dark? Researchers have an answer
 

Certain species of snake -- think pit vipers, boa constrictors and pythons, among others -- are able to find and capture prey with uncanny accuracy, even in total darkness. Now scientists have discovered how these creatures are able to convert the heat from organisms that are warmer than their ambient surroundings into electrical signals, allowing them to 'see' in the dark.



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