The latest research into the link between germs and mental illness -- and what we all need to know.
Following the recent fatal shooting incidents in Michigan and Pennsylvania, a discussion of various gun safety proposals that rely on technology, from childproof trigger locks to "smart guns" that can be fired only by their owners.
- Richard Roberts director of special operations for the International Union of Police Associations
- Steve Teret director of the Center for Gun Policy and Research at the Johns Hopkins University School of Public Health
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