Multiple factors are believed to be responsible for the significant drop in mass killings this year.

CHICAGO (CBS)-- The massacre that killed 19 children and two adults at an elementary school in Uvalde, Texas is putting the spotlight on gun violence in Chicago. Chicago has the dubious distinction of ...

No matter how you define a mass shooting, one thing is clear: data suggests this brand of violence has grown worse in the United States. In 2015 alone, there have been 299 shootings that killed or ...

An abdominal mass is an abnormal growth in the abdomen. It causes visible swelling and may change the shape of the abdomen. You may notice weight gain and symptoms like abdominal discomfort, pain, and ...

Massachusetts will see the sun on Saturday, before overnight snowfall drapes a white blanket over most of the state. The National Weather Service forecasts Boston to reach a high temperature of 38 ...

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 ...

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 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 ...

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 ...

If you have any familiarity with the Salem Witch Trials, you already know something about mass hysteria, also known as mass psychogenic illness. Mass hysteria refers to an outbreak of unusual and ...