I began grossly editing this big mess of a series because of a report. I removed many duplicate seasons and episodes, but there is SO much left to do.

A few quick notes:

• The most recent seasons (Season 2009-2010 and up) now follow the official website.
• As far as I can tell from the web archives, the current system (with proper seasons and numerated episodes) was introduced around mid-February 2009. The old website didn't have any seasons nor episode numbers. Therefore, I decided to use the yearly splits for the earlier episodes. I think it makes the most sense AND it was easier as it is the split we currently use.
• I started quickly confirming the episodes with the Website, then BBC Genome and locking the seasons as a preventive measure. However, I'm pretty sure there are some misplaced (specials!) or missing episodes.
• The listing for some of the earlier episodes often has two episodes/parts. I haven't try to figure out what it is exactly (a second episode? a short segment?), but they are sometimes postponed/paired with a different episode.
• This one should have at least an alternative grouping by year + the current website order.