LITTLE was expected of the global climate talks, which finish in Durban this weekend, and little of any great significance will be agreed. The US, Canada, China and Russia, even the EU, have been dubbed 'climate vampires' for sucking life out of the event.

For years, it has been heresy in the climate movement to suggest that the Kyoto protocol, upon which the last two decades of talks have been based, should be abandoned. Even the usually measured UK climate secretary Chris Huhne spluttered at the idea earlier this year, with an uncharacteristically colourful comparison to the usefulness of a 'chocolate teapot'.

Now, however, it is definitely time to move beyond Kyoto: a process designed to fail.

Since governments met in 1997 and agreed that humans should cut emissions of CO2 and other greenhouse gases, scientists have become ever more certain — and alarmed — about the potential disruption to life on Earth as the ice melts, deserts expand, seas rise and oceans acidify. Yet, despite hours of talks, millions of air miles, dinners and expense accounts, carbon pollution has risen by nearly half, and governments are further than ever from agreeing on how to stop runaway warming.

A better solution would be to forget a global deal and let countries go it alone, or in small groups. But to make that happen, world trade needs to be reformed to protect those nations or industries which do take action to cut their emissions against the free-riders who want to keep getting rich on fossil fuels.

Talk of 'life beyond Kyoto' has started to rumble, mostly privately. Among the high-profile players, Sir David King — who as the UK government chief scientist famously declared climate change was a “bigger threat than terrorism” — is almost alone in having publicly set out an alternative.

King's proposal is based on the only really equitable division of emissions: to work towards a world in 2050 where every human has an 'allocation' to emit two tonnes of CO2 each year — a huge cut for rich nations, an increase for poor countries who could choose to build more coal plants or sell their permits to fund 'clean' development.

King's plan, though, appears to depend on the ambition of individual governments: that they will create prosperity from getting ahead in the technological race to make goods and services in a nearly carbon-free world, without suffering too much from what, in the short run, will be cheaper competition.

The Kyoto process toyed with this model in the 2009 Copenhagen accord. So far, governments accounting for 85 per cent of global emissions have made pledges, but even if they delivered on these 'informal commitments', scientists believe there is still a likelihood that the world would warm by an average of 3°C or more. Instead, what is needed is what a few economists have begun to write about as 'carbon border adjustments': extra taxes on higher-carbon goods and services.

It's easy to think of practical problems: how to compare different targets, or whether to insist on a common goal like two tonnes per person; how to judge who misses a target despite trying, and who never really tried at all. And there is the core problem of getting the institutions, particularly the World Trade Organisation, to make the changes. — The Guardian, London