The Coalition Government has some huge gaps in its safety net when it comes to our environment

If the now-revealed benchmark act of this Coalition Government – the zero carbon bill – marks this generation's "nuclear moment", then as a defence against the rockets that are already flying it will not stop half the bombs from falling.

Not that any act of Parliament would do that completely at this late stage of the climate and ecological crisis we are in.

But as a declaration of intent to avert catastrophe it is ambivalent in its approach and lax in its timeframes.