It is a simple fact of life on earth that there is going to be no successful mitigation of the climate change problem without a truly global effort. All developing companies or all major developing countries have to be part of that and accept substantial constraints on greenhouse gas emissions.
Good compost is key to thriving garden, it's zero-carbon (possibly even carbon-negative), free, and has positive ecological benefits.
Building up soil organic matter helps retain moisture and improve drainage, improves retention of nutrients, and even makes them more acessible to plant roots. Micro-fauna & flora populations are increased and these provide the basis of a rich food web where invertebrate numbers are boosted which provide meals for birds, hedgehogs and amphibians.