Health experts: North Korea is facing shortage of tuberculosis medications that could accelerate spread of more deadly strain, putting hundreds of thousands at risk

A U.S.-based nonprofit group has called for South Korea to take stronger steps to fight a tuberculosis crisis in North Korea it says has worsened under strengthened U.S.-led sanctions against the country over its nuclear weapons and missile program

San Francisco's beloved Batkid is cancer-free and thriving in a wide range of activities

Smoke from major wildfires is spreading into California cities and raising concerns about the impact on people's health

Recurring wildfires are sparking concern among medical experts about potentially major health consequences