How They Did It: Inside a Mega-Collaboration on the US-Mexico Wall

More than 30 journalists set out to film and observe every foot of the border with Mexico, from Texas to California. The result was a fully interactive map with about 20 hours of aerial footage of the border, a seven-chapter story about the journey, 14 additional stories about the consequences of the wall, 14 mini-documentaries and an explanation of the history of the border itself. Here’s how they did it.