mass shooting

Upstate scientist Jessica Henty-Ridilla tells about her research into neurodegeneration. Psychiatrist Ronald Pies discusses mental health's possible relationship to violence, including mass shootings. Pharmacology researcher David Auerbach explains his investigation into electrical disturbances in the brain and the heart.

A 44-year-old fire specialist died and a 54-year-old firefighter was shot when the gunman opened fire on Tuesday at Fire Station 81 in Santa Clarita, Calf., about 45 miles north of Los Angeles.

Santa Clara County said a ninth victim in Wednesday's shooting died in a hospital. This brings the death toll to 10, including the gunman.

Although they're still a statistical anomaly, one explanation for the latest uptick in killings is that with the COVID-19 pandemic, perpetrators have had time to plan their attacks, one expert says.

We're just 18 weeks into 2021, and already the U.S. has experienced 194 shootings in which four or more people were shot or killed, excluding the shooter.

Ahmad Al Aliwi Alissa is facing 10 counts of murder in the first degree and one count of attempted murder over the horrific attack at a King Soopers supermarket.

"This is a real horror and terror for all of us," said Colorado Gov. Jared Polis, who said he has shopped at the same store where gunfire erupted on Monday.

His father says Eric Talley, 51, was a devoted dad who was learning to be a drone operator, because the job would be safer.

After the shooting at the Capital Gazette newspaper, the surviving staff resolve to rebuild their paper.