Development agency Christian Aid believes that the historic Climate Change Act, passed in 2008, is now under threat from the coalition government.
An energy bill to be debated in this parliamentary session could ensure the UK’s electricity generation is zero carbon by 2030, but Chancellor, George Osborne, has said he is opposed to this, environmentalists point out.
Equally worrying, they say, is the talk of excluding international shipping and aviation from the UK’s greenhouse gas emissions targets.
All of this comes at a time when recent CBI research indicates that a third of the UK's economic growth in the past year came from green business, proving that efforts to build a low-carbon economy are not just pie in the sky – they’re really working.
The Stop Climate Chaos coalition, which includes Christian Aid and other church agencies, is working to drive the message home to Prime Minister David Cameron that 'green is working'.
It is urging supporters to send a message to their MP, asking him or her to write to the PM, calling on the government to stand by the growing green economy and the Climate Change Act.
This is necessary in order to safeguard lives and livelihoods, not just in the UK but across the world and in some of the poorest communities, they declare.
"With climate change impacts already being felt by wildlife and the world’s poorest communities, we need to do all we can to fight it," Luke Harman, Christian Aid's campaigns assistant, commented.
* More on Christian Aid: http://www.christianaid.org.uk/ 
* Stop Climate Chaos Coalition: http://stopclimatechaos.org/