This morning the Today programme welcomed Professor Paul Ekins onto the airwaves to discuss what he saw as the problems with government energy policy (audio below). Professor Ekins came over as a highly media-trained green activist, which is perhaps entirely unsurprising because that is what he is - as a former co-chair of the UK green party and the author of tomes such as "A New World Order: Grassroots Movements for Global Change", he has been in the forefront of green politics for 20 years.
It's just that the Today programme didn't want you to know that, and Professor Ekins was presented as just some disinterested academic brought in to provide some rigour to proceedings. Coming so soon after the episode in which the Today programme accidentally forgot to mention Jeremy Leggett's financial interests this is starting to look like policy rather than oversight.
And when you also take into account the decision of presenter Sarah Montague to let Ekins expound at length, with barely a word of challenge, the impression you got was that this was simply the BBC trying once again to fight battles on behalf of the green movement.
The message from the Corporation is, once again, "To hell with your charter obligations, we're on a mission from Gaia".