Mass General Brigham plans to acquire the insurer Fallon Health, consolidating the Massachusetts nonprofit insurance landscape amid challenging financial times.

Every mass shooting in the U.S. raises calls for better policies to prevent such tragedies. There's evidence suggesting that certain kinds of laws may reduce deaths from mass shootings, say scientists ...

The Higgs field gives mass to elementary particles, but most of our mass comes from somewhere else. The story of particle mass starts right after the Big Bang. During the very first moments of the ...

A "mass shooting" at a large street party in Indiana early Sunday morning left one person dead, police said. A hospital said 19 people were being treated for injuries at its facility. Muncie police ...

Catholics and even non-Catholics around the world have recently been imploring Pope Francis to refrain from implementing a rumored ban on the Tridentine Mass, also known as the Traditional Latin Mass ...

New moves by Pope Francis mean changes for Catholics dedicated to the Traditional Latin Mass —and for the priests and bishops responsible for these communities. Even though these Catholics represent a ...

An abdominal mass is any abnormal growth that occurs within the abdomen. There are various causes of these masses, including cysts in the stomach or other organs, medical conditions, and cancer. A ...

The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions. In other words, the mass of any one element at the ...