"Philosophers have long been concerned about what we know and how we know it. Increasingly, however, a related question has gained prominence in philosophical discussion: what should we believe and why? This volume brings together twelve new essays that address different aspects of this question. The essays examine foundational questions about reasons for belief, and use new research on reasons for belief to address traditional epistemological concerns...

Why do some parents refuse to vaccinate their children? Why do some keep guns at home, despite scientific evidence of risk to their family members? And why do people use antibiotics for illnesses they can't possibly alleviate? When it comes to health, many people insist that science is wrong, that the evidence is incomplete or inconclusive, and that unidentified hazards lurk everywhere to harm us.