"...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.

The tiny stone tools of our prehistoric ancestors were like the disposable razor blades or paperclips of today—pervasive, easy to make, and easily replaced.

Spear points that are more than 15,000 years old shed new light on the earliest people to explore and settle North America.