Headaches are a common complaint, and there are many different types. One method for treating headaches is physical therapy. Depending on the type of headache a person experiences, physical therapy ...

A stressor is any event, situation, or external stimulus that causes a stress response in the body. Common types of stressors include financial, social, and occupational stressors, or those due to ...

In the strange and fascinating world of quantum mechanics, particles have long been sorted into just two types: fermions and bosons. These labels help explain how matter forms and how forces work.

Scientists have taken a major step toward solving a long-standing mystery in particle physics, by finding no sign of the ...

Millennia ago, Aristotle asserted that nature abhors a vacuum, reasoning that objects would fly through truly empty space at impossible speeds. In 1277, the French bishop Etienne Tempier shot back, ...

Over the past century, quantum field theory has proved to be the single most sweeping and successful physical theory ever invented. It is an umbrella term that encompasses many specific quantum field ...

Scientists have detected a strange new type of high-frequency wave on the sun's surface, and the waves are moving three times faster than scientists thought was possible. The acoustic waves, called ...

Psychology knows a great deal about the role of emotional connections between romantic partners, but little about the physical affection side of the equation. Yet, in daily life, everyone can attest ...

Physical hazards can cause bodily harm and even death. Knowing the most common types, their risks, and preventive measures can help you stay safe at home and in the workplace. A physical hazard is an ...