Digital redlining is when seemingly neutral algorithms inadvertently make decisions that lead to discrimination. Chris Gilliard teaches at Macomb Community College in Dearborn Michigan. He's studied digital redlining and uses it as a powerful metaphor to talk about the way class divisions and racial discrimination can be fostered by algorithmic decision making.

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It was a Hallowe'en-worthy experiment. On Halloween night Researchers at MIT let the internet and its users "control" an actor as he played an online game. How well can a hive mind work? Researcher Niccolo Pescatelli explains.

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How vulnerable are electronic voting machines? Well J. Alex Halderman once hacked into one in front of U.S. Congress to demonstrate their vulnerabilities. He's a cyber security expert and professor of computer science and engineering at the University of Michigan. He discusses how these voting security issues may be putting democracy at risk.

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Agbogbloshie, an area in Accra, Ghana. Every year, 250,000 tons of old phones, computers, and appliances are illegally brought here. About 6,000 people, including many children, live and work here. It's a polluted, blighted place. But it's also a place of community and culture. Florian Weigensamer is one of the filmmakers behind the documentary, Welcome to Sodom, which tells the stories of Agbogbloshie.