“Probing Human Origins” explores, from various perspectives, how humans became human. This collection of papers acknowledges the importance of genetic ‘blueprints’ but rejects the idea that the DNA sequence of the human genome contains a book of instructions that defines being human. Instead, it promotes the idea that during humankind’s evolutionary history, genic changes occurred in ancestral genomes that were positively selected to help shape the distinctive human phenotype.

Central to the American tradition of expanding protections for controversial speech is a robust distrust of potential censors to make reasonable judgments about what speech should be suppressed. But the arguments for a more restrictive approach to speech often implicitly or explicitly evince much greater trust in the likely decision-makers who will be entrusted with the authority to suppress speech. Whether restricting Communist speech, antiwar speech, “hate speech,” or “disinformation,” the case for empowering some authority figure—such as campus administrators, technology company employees, or government officials—builds on an assumption that those authority figures will be motivated by good intentions and be endowed with good judgment to make reasonable distinctions between the speech that should be tolerated and the speech that should not. Such confidence would often seem to be misplaced.

Although American society will not become race-blind anytime soon, the meaning of race is changing, and processes of racial formation now are quite different than those prevailing just two generations ago. Massey puts the present moment in historical perspective by reviewing progress toward racial equality through successive historical epochs, from the colonial era to the age of Obama. He ends by exploring the contours of racial formation in the United States today, outlining a program for a new civil rights movement in the twenty-first century.