In failing to reduce climate change, they are right.
The pope has written in his encyclical of the urgent need to reduce climate change gases.
We know that to reduce climate emissions we need to tackle air pollution as well.
So aggressive citizen enforcement could not only reduce climate changing emissions, but reduce the federal deficit.
It could also reduce climate pollution, if the electricity was generated by renewables, nuclear power or fossil fuels with CCS.
We have wasted more than a decade failing to set up an effective market mechanism to reduce climate change.
If we address this, the causes of air pollution will overlap and we will reduce climate change.
And since fossil fuel methane emissions are higher than previously thought, the potential to reduce climate forcing from this specific source is also greater," he told the Guardian.
If you want to reduce climate disruption, then you have a big interest in whether governments that want to reduce oil production are able to do so.
Governments proposed for the first time on Monday to reduce climate pollution from airplanes, plugging one of the biggest loopholes in last December's landmark Paris agreement.
Billions of pounds are being wasted in paying industries in developing countries to reduce climate change emissions, according to two analyses of the UN's carbon offsetting programme.
