From “anatomy” and “amino acid” to “tyrannosaurus” and “voltmeter,” the words in this collection of hangman puzzles all connect to the world of science. Whether it's the name of a famous physicist (Stephen Hawking), a concept (biodiversity), or a discovery (like cosmic rays), the theme makes everything just a little bit more challenging—and fun. Just scratch the silver circle next to the letter you want to see if it's in the word, and where. But six wrong guesses leave you hanging!
