mass-casualty shootings

Later this month will mark the 20th anniversary of the school shooting at Columbine High School. Now, current Columbine students have started a controversial campaign to try to bring more awareness to the prevalence of gun violence.

U.S. Department of Homeland Security

The Department of Homeland Security wants more lay people trained to control life-threatening blood loss. They're spreading the word through a national awareness campaign and a course called Stop the Bleed.