Involuntary movements include tremors, muscle spasms, tics, and others. Some medical conditions that affect muscles, nerves, the brain, or spinal cord can cause them, such as multiple sclerosis, ...

The Society for Human Rights is founded by Henry Gerber in Chicago. The society is the first gay rights organization as well as the oldest documented in America. After receiving a charter from the ...

Experts fear a new era of atomic brinkmanship and covert proliferation. Robin Wright on how Rafael Grossi risks his life tracking the world’s most dangerous material. The narrative of boom and bust is ...