Mathematician Cathy O'Neil says algorithms embed existing bias into code -- with potentially destructive outcomes. Everyone should question their fairness, not just computer scientists and coders.

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Facial analysis technology is often unable to recognize dark skin tones. Joy Buolamwini says this bias can lead to detrimental results -- and she urges her colleagues to create more inclusive code.

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For years, Alan Smith analyzed the most reliable demographic data in the U.K. - the census. He noticed people's perceptions conflicted with reality, and wondered if there was a way to bridge the gap.

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 We need statistics to make fair policy decisions, but there are a lot of bad stats out there. Data journalist Mona Chalabi says you need skepticism and a list of questions to face any dubious stat.

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As New Jersey Attorney General, Anne Milgram transformed the most dangerous city in her state. She changed a criminal justice system based on gut and instinct to one supported by data and statistics. 

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