From Google search to Facebook news, algorithms shape our online experience. But like us, algorithms are flawed. Programmers write cultural biases into code, whether they realize it or not. Author Luke Dormehl explores the impact of algorithms, on and offline. Staci Burns and James Bridle investigate the human cost when YouTube recommendations are abused. Anthropologist Nick Seaver talks about the danger of automating the status quo. Safiya Noble looks at preventing racial bias from seeping into code. And Allegheny County’s Department of Children and Family Services shows us how a well-built algorithm can help save lives.