A San Franciso police officer displays several ‘ghost guns’ – untraceable firearms with no serial numbers or manufacturing marks.

What are ‘ghost guns,’ a target of Biden’s anti-crime effort?

For starters, they are impossible to trace.

Marcus Shaw UC Merced

Former street kid fulfills educational promise with Ph.D.

Marcus Shaw turns his troubled past into an area of study and fuel for his own academic achievement.

social security card

Rethinking the idea of Social Security numbers

Cyberattacks have raised questions about the use of Social Security numbers as universal identifiers. If we can't stop using them, what else can people do to fend off identity thieves?