Yesterday I tried (and largely failed) to identify why I was left disappointed by this week's climate change hustings event, a disappointment that was repeated 24 hours later when the party leaders addressed the climate change question in the leaders debates.
Just after finishing the piece I took a look at the Guardian story requesting readers to suggest what question the leaders should be asked on the environment.
In the end the question posited during the broadcast was the rather uninspiring, "what are you doing personally to tackle climate change?" We learnt that Gordon Brown has a solar panel, David Cameron has insulation and Nick Clegg would like to do more than he does currently, but we did not learnt anything new about how they plan to address what they agree is one of the most daunting challenges facing the country.
But the question that should have been asked, the question that explains my gnawing sense of disappointment at the environmental debate so far, was suggested by someone on the Guardian site going by the moniker realityethical: "Do you believe that climate change is man made? If yes - why don't you have policies that adequately deal with the problem?"
This is really the only question that matters. It is the question all business leaders who accept that climate change is a threat to the long term health of both the wider economy and their business should be asking.
It is the reason that the environmental debate has remained disappointing, despite the fact the main parties are greener than ever before and have a lot of great low carbon policies in place.
It is the question our political leaders cannot answer without admitting they lack the ability to convince people of the urgent need to transition to a low carbon economy.
If you get the chance to quiz a politician during this election campaign this is the question you should ask.
UK insurers will be called upon next month by the Prudential Market Authority to stress test their business against a range of climate and transition risks
As ClientEarth warns too many councils have missed deadlines to submit air quality plans, government confirms fresh support from its Clean Bus Technology Fund
Environment Agency chair Emma Howard Boyd's speech at the European Bank for Reconstruction and Development - in full
Britain has its first new deep coal mine in decades - a result of pretending climate change isn't political
Rebecca Willis argues the controversial decision to approve a new coal mine in the UK is symptomatic of a wider political failure