Also, people lease understand that words such as 'clean' mean nothing. Or can mean anything they want it to.

But for example in energy context, renewable is only sometimes 'clean'. If the source, such as peat or wood that they burn to produce the energy, then yeah it's renewable - you regrow what you used - but it's fucking far from clean as it produces pretty much as much of CO2 than anything being burned to make electricity, beit the doomed coal or gas or biodiesel. As long as the electricity is produced by burning anything, it's really just adding to the crisis.

Thus, after 15 years of working in the field, having a MSc and a PhD in sustainability, I'm favouring nuclear over the 'renewables' nowadays.