Cubed: The Puzzle of Us All ages 4-8 HeLa cells were vital for

HeLa cells were vital for developing the polio vaccine

but they don't seem to be having much luck and keep finding the wrong animals

Tokyo Rose: Zero Hour has an introduction explaining the "Tokyo Rose" phenomenon and the devastating effects of World War II on Asian-American communities that continue to reverberate

dangerous trouble

Cubed: The Puzzle of Us All ages 4-8 HeLa cells were vital forThe first book by the reclusive inventor of the world's most iconic puzzle THE RUBIK'S CUBE. Erno Rubik inspires us with what he's learned in a lifetime of creating, curiosity, and discovery. Erno Rubik was a child when he first became obsessed with puzzles of all kinds. "Puzzles," he writes, "bring out important qualities in each of us: concentration, curiosity, a sense of play, the eagerness to discover a solution." To Rubik puzzles aren't just