Amy Lewis | Cochlear implants build bridges between the hearing and the deaf—but not everyone wants to cross

BACKGROUNDER | Evaluating environmental claims about natural gas cooking amid a regulatory clampdown

A research team at the University of Pittsburgh is working to help stroke victims regain the use of their arms

BACKGROUNDER | A veterinary tranquilizer is compounding a crisis of drug deaths

BACKSTORY | The challenges of reporting on America’s vaccine controversy