Hans Bethe--German-born American theoretical physicist--helped increase understanding of quantum physics and the atomic processes of matter. He earned a Nobel Prize for Physics in 1967. Steven Pinker is a Canadian-born American experimental scientist who has made great strides in understanding of the evolutionary interpretation of language acquisition in humans. Informative text is paired with revealing photographs and primary sources to help make this an enjoyable and educational guide to modern scientists. Readers will be fascinated and inspired for years to come.