Why we can’t afford to dismiss carbon offsetting in a climate crisis

  • We have 10 years to prevent irreversible damage to the planet due to climate change.
  • Despite this urgency, critical tools such as carbon offsetting, have been tarnished by claims of greenwashing.
  • We have a moral imperative to act now and harness the potential of carbon projects.

Given their potential, you’d think investments in nature would be a key priority? Well, you’d be wrong. Investments in nature represent just 3% of global finance dedicated to protecting the climate – a frustratingly small proportion.

As a scientist, I prefer to stick to data rather than debate questions of morality. Yet, I can no longer avoid wading into an argument that is consuming the environmental community. My fellow climate scientists tell us that we have about 10 years to reverse the growing concentration of greenhouse gases in our atmosphere or face catastrophe.

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Carbon offsets, a critical tool for doing this, is hung-up in a dispute over whether offsets are just greenwashing. These criticisms resurfaced recently after UN Special Envoy on Climate Action and Finance Mark Carney detailed a blueprint for expanding the global carbon offsets market.

So, what are carbon offsets and what’s the debate about?

The idea is this: companies or individuals can buy and trade credits to offset a portion of their carbon emissions, with the revenue paid to landowners and communities as an incentive to protect and restore forests. This prevents emissions from deforestation – the second-leading cause of climate change – and absorbs the carbon in the atmosphere.

Land-based sinks in 1.5. pathways
Land-based sinks in 1.5. pathwaysImage: Griscom et al., 2017

The trouble is, some critics, many of them my fellow environmentalists, see these investments in nature as a license for corporations to pollute — moral hazards, they claim, that amount to greenwashing.

I can sympathize with this reasoning. Many corporations have assiduously worked against responsible climate and environmental policies, but that tide is turning.

Leading companies now acknowledge their foundational dependence on nature and a stable climate, and recognize the need to protect it by buying carbon offsets – a pragmatic and effective tool. Any further delay in deploying this tool will plunge humanity into a climate catastrophe of much greater impact. That’s the real moral hazard we face today.

What’s the World Economic Forum doing about deforestation?


The science is clear. We must do two things to avoid a complete climate breakdown: dramatically reduce emissions and rapidly remove carbon that is already in the atmosphere. The vast majority of emissions cuts must come from ending the use of fossil fuels but we will not reach our emissions reductions goals without addressing deforestation, the second leading cause of climate change. High quality forest carbon projects provide the financing needed to ensure governments and local communities keep their forests standing.

In 2017, I published a study with colleagues which found that nature can deliver a third of the emissions cuts needed by 2030 to avert climate disaster. Not only do carbon offsets support natural climate solutions, like reforestation or the restoration of mangroves – the businesses that invest in them tend to take their climate commitments seriously.

Mitigation potential by ecosystem
Mitigation potential by ecosystemImage: Griscom et al. 2017

The CDP Climate Change Report 2016 found that companies that bought voluntary carbon credits also made more ambitious emissions cuts compared with companies that did not. Furthermore, despite the name, “offsets” are not just a one-to-one trade for dodging emissions cuts. Carbon trading brings in lower-cost options from nature, enabling much more climate mitigation “bang for the buck.” To be sure, carbon offset claims need to be verified. Fortunately, carbon verification systems have significantly improved.

Critics who remain unconvinced of the importance of carbon credits might consider how some local and underserved communities have benefited.

Success stories

A successful forest-carbon project in an area of the Peruvian Amazon that had some of the country’s highest deforestation rates has reduceddeforestation by 75%, resulting in the avoidance of more than 6 million tons of carbon emissions – the equivalent of taking more than 1 million cars off the road each year. Some 70% of the local community in this area benefitted from this programme through better healthcare and agricultural training.

Those benefits have real payoffs. Take Alto Mayo’s coffee crop – income provided by the carbon project has helped the local shade-grown coffee cooperative invest in productivity and quality, and establish access to new markets. Even as the pandemic has wrecked Peru’s economy, the cooperative’s exports grew by 50% in 2020 and since 2016 has earned $3 million dollars in revenue.

Another carbon offsets programme in California has seen more than 100 million credits traded to date, generating more than $500 million in revenue – with most of that going directly to local communities.

The government of Costa Rica, meanwhile, generates $30 million a year for forest conservation through the sale of carbon credits, and has conserved more than 2.5 million acres of its forests to date.0 seconds of 1 minute, 28 secondsVolume 90% 

This is exactly why carbon offsets are so important: they create positive incentives that upend the conventional economic motivations that render tropical forests more valuable dead than alive. Increasing the demand for offsets can generate much needed action to test effective and socially responsible solutions, and scale them up globally through policy reforms.

In other words, carbon offsets are essential because they provide a simple way to keep, replenish and expand forests. Once a company or other entity has reduced their emissions as much as possible with existing technology, they can buy credits to deploy the most widely available but underfunded climate technology in existence, photosynthesis, thereby compensating for the environmental impact of energy sources such as jet fuel that do not yet have cost-effective alternatives.

Carbon offsets are not a silver bullet. They are no substitute for massive, comprehensive reductions in fossil fuel emissions. As with all innovative climate solutions, there have been successes, some of which I mentioned, and failures. We must be disciplined in learning from both.

Here’s the bottom line – the destruction of nature is the second largest driver of climate change, and we will not avert a climate crisis without investments that halt and reverse this destruction. We have a tool that does just that. To not use it is immoral.

The World Economic Forum’s effort to accelerate change

Unlocking large-scale carbon finance for nature, whether through voluntary or compliance action, requires close collaboration between governments, businesses, investors and civil society. The World Economic Forum and World Business Council for Sustainable Development co-convene the Natural Climate Solutions Alliance to bring together public and private stakeholders to identify opportunities and barriers to investment into carbon offsets in new and existing markets to increase financing for nature.

The NCS Alliance complements the work of the World Economic Forum’s Platform to Accelerate Nature-Based Solutions, where other projects like the Tropical Forest Alliance1t.org and Nature Action Agenda are fostering net-zero and nature-positive economies.

Más Información: Weforum.org