A self-administered radiation blood test would take some burden off medical systems after a nuclear attack or disaster.

The mismatch between child firearm deaths and funding to investigate the issue may help explain why such deaths among young people have climbed, say researchers.

"What we can see is a worsening epidemic of firearm mortality that is geographically and demographically broad..."

100 milion people could die immediately in a nuclear war between India and Pakistan, but that would just be the beginning.

What would happen if the US and Russia went to war with nuclear weapons? Well, first, the world would get very, very cold. And that's just the beginning.

Many gun retailers in Washington state say they'd be willing to train employees to spot those at risk of suicide.

Wildfires in British Columbia in 2017 caused the formation of a cloud so big that scientists say it will help them model the effects of a nuclear war.

"...the truth is that we have a pretty good grasp at what's going on. People who shouldn't have access to guns are getting access."

"With respect to preventing gun violence, an arrest in a nonfatal shooting is every bit as important as an arrest in a fatal shooting."

Firearm injuries kill more American children and teens than anything else, except automobile crashes. There's an urgent need for research.