Nicholas Stern’s 2006 Climate Review: Urgency in Policy and Action

In 2006, Nicholas Stern delivered a groundbreaking report that captured the attention of global leaders, reshaping the dialogue on climate change economics. Commissioned by the UK government under Prime Minister Tony Blair, Stern’s analysis brought urgency to the economic implications of climate change, uniting diverse sectors in a shared mission.

The 600-page The Economics of Climate Change: The Stern Review warned of the hefty financial toll from climate inaction, predicting costs between 5% and 20% of global GDP per year due to extreme weather, sea-level rise, and unbearable heat. In contrast, curbing emissions was estimated at merely 1% of GDP annually (go.nature.com/47wkguf).

Recently, Stern published The Growth Story of the 21st Century, reflecting on the profound impact of his initial findings as political commitment to climate action wanes in many affluent nations. The Stern Review demonstrated the power of integrating scientific research with policy, a lesson the world must urgently recall.

Policy Challenges

By the mid-2000s, climate science had made undeniable strides, influencing policies worldwide. The Kyoto Protocol, effective since 2005, signaled a collective effort by wealthier nations to reduce greenhouse-gas emissions. However, this urgency often remained isolated within environmental circles, lacking broader governmental traction.

Environment ministries, often perceived as less influential compared to finance and trade departments, struggled to push climate policy into the economic mainstream. Experts warned of the costs of inaction, but their voices rarely reached key decision-makers.

The UK’s 2005 G8 presidency highlighted this disconnect, failing to convey the climate crisis’s urgency to world leaders. This prompted then Finance Minister Gordon Brown to task Stern with consolidating existing knowledge for a wider audience, including policymakers and industry.

Efforts to amplify the review’s message extended beyond the UK. Stern engaged global leaders, addressing the African Union in Addis Ababa, the US Capitol, and the Toronto Stock Exchange, among other venues, fostering international dialogue on climate policy.

The review’s legacy is significant, influencing treaties like the 2015 Paris Agreement and inspiring legislation mandating emissions cuts, such as the UK’s Climate Change Act 2008.

Predictive Insights

Despite its influence, the Stern Review faced criticism, particularly regarding its economic assumptions. Some economists argued the discount rate was too low, overvaluing immediate mitigation investments over future economic growth.

This critique assumed climate change was static, not accounting for its escalating nature. Projections from the review have since proven conservative, as climate impacts intensify.

Today, climate change is a global priority, yet many high-income countries are retracting their commitments, viewing emissions reduction as overly costly amid economic challenges. The Stern Review’s enduring lesson is clear: delay amplifies future costs. Communicating evidence remains crucial to spur action and mitigate escalating risks.