Most expensive television documentary series per minute

Depicting how dinosaurs lived, reproduced and became extinct, the BBC’s documentary series Walking with Dinosaurs cost over £37,654 ($61,112) per minute to produce.  

Taking over two years to produce, the six part series, with each episode having a running time of 27 minutes, cost a total of £6.1 million ($9.9 million). 

The first episode was aired on 4 October 1999.

It featured computer graphics and animatronics with background footage filmed in locations around the world.

The series won three Emmy Awards on 10 September 2000.