Businesses and governments around the world face a complex challenge: How should they implement artificial intelligence (AI) in ways that respect human rights, avoid bias, incorporate diverse perspectives, and yield safe, socially beneficial products? In recent years, numerous AI "principles documents" have emerged from governments, private companies, and advocacy groups. Researchers at Harvard's Berkman Klein Center for Internet & Society studied 36 of these documents. They found significant consensus around core issues such as privacy, transparency, and bias. In January they published their findings in a white paper and in a graphic model of ethical AI principles.