A lot of discussion still on what they are doing, but it is worth getting a handle on what they are to try and get to an informed opinion.
Here's a start:
BBC Green - 60 second guide to... Greenhouse gases - Bear in mind that this is 'a' view by 'a' medium. Take the opinions in that spirit. But the facts are worth noting. And it's rare when one hears of the more 'influential' ones, such as NOx which, whilst less in volume in comparison to CO2 or Methane can actually be more serious. And these often crop up in very significant places.
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