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Articles on Q+A

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A cascade of gas centrifuges at a U.S. enrichment plant in Piketon, Ohio, in 1984. Iran is using similar technology to enrich uranium. U.S. Department of Energy

Enriching uranium is the key factor in how quickly Iran could produce a nuclear weapon – here’s where it stands today

Iran’s pursuit of nuclear weapons centers on producing weapons-grade uranium. Here’s what reports about Iran enriching uranium indicate about its progress toward the bomb.
Racial bias may play a role both in the schools that families choose for their children and the experiences their children have. Klaus Vedfelt/DigitalVision via Getty Images

Desegregating schools requires more than giving parents free choices – a scholar studies the choices parents of all races make

Inspired by her own experience with the education system, a professor of sociology explores how race and racism influence school choice and education.
The preference for lighter skin has its roots in colonial histories. STEFAN HEUNIS/AFP via Getty Images

Racism is different than colorism – here’s how

A scholar of social work shares what he has learned about colorism by conducting research in more than 20 countries over the past few decades.
High-density housing became popular as the population of Silicon Valley exploded, making affordable housing scarce. Bob Sacha/Corbis Documentary via Getty Images

Affordable housing – in pandemic times, what works and what doesn’t?

Housing affordability has been an important public policy issue since the onset of the pandemic. Economist Emily Hamilton explains the research on some popular affordable housing policies.
The Sun rises in Midland, Michigan, shortly after 8a.m. on Jan. 13, 2017. Christian Collins/Flickr

How the Earth’s tilt creates short, cold January days

The winter solstice is past, but bundle up – January is when winter really arrives in many parts of the Northern Hemisphere.

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