GMO is a Boston asset manager co-founded in 1977 by Jeremy Grantham with Richard Mayo and Eyk Van Otterloo, known for valuation-driven dynamic asset allocation built on long-horizon mean reversion. Grantham is famous for calling historic bubbles, warning publicly ahead of both the 2000 dot-com crash and the 2008 financial crisis. Flagship publications include the GMO Quarterly Letter (now written by Asset Allocation co-heads Ben Inker and John Pease), Grantham's Viewpoints essays and the 7-Year Asset Class Forecast.

This report explains how serious climate change is and what it means for investors. The author shows that in just 70 years, humans have pushed carbon dioxide levels to record highs, speeding up global warming, causing more extreme weather, and eroding soil and farmland. This threatens future food production. For regular investors, the key takeaway is that fossil fuels (like oil and coal) are likely to decline long-term, while renewable energy (like solar and wind) and agricultural technology (like water-saving methods and drought-resistant crops) could be better bets. The report also finds that even if you avoid investing in oil companies for ethical reasons, it barely hurts your returns—only about 0.2% difference. So, climate-conscious investors can adjust their portfolios without worrying much about losing money.
GMO Report: The Race of Our Lives Revisited Authored by Jeremy Grantham, this report focuses on climate change and the carbon emissions crisis. Core Argument: In just 70 years, humanity has increased atmospheric CO₂ concentration from a historical high of 280 ppm to 400 ppm—an increase of 120 ppm, e
This chapter serves as the introduction to the GMO report The Race of Our Lives Revisited, authored by Jeremy Grantham. The author focuses on the carbon emissions crisis and its catastrophic impact on the global climate and agriculture, pointing out that despite the promise of decarbonization technologies, decades of slow action have locked the world onto an irreversible warming path.
The author's central thesis is that humanity has pushed atmospheric CO₂ concentrations from a historical high of 280 ppm to 400 ppm in just 70 years—an increase of 120 ppm (equivalent to the gap between an ice age and an interglacial period)—and projects another 120 ppm increase, ultimately tripling the ice age-to-interglacial gap. This is described as a "reckless and irresponsible experiment." The counterintuitive judgment is that even with rapid growth in renewable energy, fossil fuels will still account for over 50% of global energy consumption by 2050, meaning carbon emissions will not stop, and climate change will only "barely slow down."
Comparative Data Table:
Over the past 400,000 years, CO₂ concentrations fluctuated between 180 ppm and 300 ppm, but after 1950, they rapidly rose to over 380 ppm, far exceeding the historical high of 300 ppm.
| Indicator | Historical/Baseline Value | Current/Projected Value | Change Magnitude |
|---|---|---|---|
| Atmospheric CO₂ Concentration | Ice age: 180 ppm; Interglacial: 280 ppm | 400 ppm (+120 ppm after 1950) | +120 ppm in 70 years |
| Global Surface Warming Rate | 1900–1950: 0.007°C/year | 1998–2016: 0.025°C/year | ~3.6x increase from early to recent period |
| Global Soil Loss Rate | Minimal under normal rainfall | ~1% per year | Erosion intensified by heavy rainfall |
| Global Arable Land Loss Rate | — | ~0.5% per year | Primarily from erosion and urbanization |
| Remaining Good Harvest Years | — | 30–70 years (varies by region) | Based on FAO estimates |
| Urban Expansion on Farmland | — | ~2.5 million acres per year | Concentrated in fertile riverine plains |
This chapter does not mention specific listed companies or assets; it primarily discusses macro trends (CO₂, temperature, energy mix, agricultural output). However, implied investment directions include:
Global surface temperature anomaly rose from approximately -0.4°C in 1900 to about +0.9°C in 2010; after 1958, the warming rate accelerated from 0.007°C per year to 0.025°C per year.
The sequel further reveals the structural flaws of the capitalist system in addressing long-term issues. The author identifies the discount rate as a core obstacle: companies typically use a 15% discount rate to evaluate investments, meaning that $1 earned 26 years from now has a present value of only 2.5 cents. This mechanism naturally leads businesses to ignore risks beyond 25 years, making it a logical necessity that "grandchildren have no value."
The sequel provides the specific allocation of the GMO climate portfolio (Exhibit 5) and cites NextEra Energy CEO James Robo's view: "Unsubsidized wind + solar + storage will be cheaper than coal and nuclear power over the next decade." This signals that renewable energy is approaching an economic inflection point.
Global primary energy consumption is projected to increase from approximately 10,000 TWh/year in 1900 to about 170,000 TWh/year in 2050; fossil fuels will still dominate, but renewables are growing rapidly.
| Investment Area | Allocation | Key Drivers |
|---|---|---|
| Clean Energy (including solar, wind, storage) | 39.4% | Cost declines, policy support, technological breakthroughs |
| Energy Efficiency | 16.8% | Industrial energy savings, building retrofits, smart grids |
| Agriculture | 19.1% | Threat of climate change to food security |
| Copper | 8.4% | Electric vehicles use 5x more copper than traditional cars |
| Water | 4.4% | Water scarcity and pollution treatment needs |
The sequel uses a 30-year backtest (1989–2017) in Exhibit 6 to demonstrate that divesting from any industry has a negligible impact on long-term returns. Specific data are as follows:
The U.S. grain production index is projected to decline from 1.0 in 2017 to 0.44 in 2040 (a 56% decline); with adaptive measures, it is projected to decline to 0.62 (a 38% decline).
| Divested Industry | Annualized Return (Nominal) | Difference from S&P 500 (bps) |
|---|---|---|
| All Industries (S&P 500) | 9.74% | Benchmark |
| Excluding Energy | 9.77% | +3 |
| Excluding Healthcare | 9.44% | -30 |
| Excluding IT | 9.56% | -18 |
| Excluding Financials | 9.94% | +20 |
The sequel concludes with three specific action recommendations:
1. Vote for Green Politicians: The author emphasizes that all major U.S. environmental laws over the past 100 years were passed by Republicans (e.g., the Clean Air Act, the Endangered Species Act), calling for transcending partisan lines.
2. Lobby Investment Institutions: Demand that investment firms "go greener" and push their portfolio companies to take climate action. The author suggests "cashing in some career risk units"—i.e., accepting short-term career risk for long-term ethical gains.
3. Attract Young Talent: Younger generations are more concerned about climate issues, and green investment strategies help attract top talent.
In the GMO climate change portfolio, clean energy accounts for the highest allocation at 39.4% (with battery storage at 14.0% and solar at 9.7%), agriculture at 19.1%, and energy efficiency at 16.8%.
The author elevates climate action to the level of species survival: we must not only protect portfolios from "stranded assets" but also protect humanity itself. He cites a UN projection that the global population will reach 11 billion by 2100, while climate change, population growth, and environmental toxicity will severely threaten food security.
| Indicator | 2010 Prediction | 2023 Actual | Gap Direction |
|---|---|---|---|
| Solar Cost Decline | 40–50% | 82% | Technology exceeded expectations |
| Global Forest Area (million km²) | 40.5 | 39.2 | Ecological deterioration |
| Ocean Acidity (pH) | 8.11 | 8.04 | Accelerated acidification |
| Frequency of Extreme Weather Events (per year) | 350 | 520 | Worsening disasters |
From 1989 to 2017, the annualized return of the S&P 500 excluding the energy sector was 9.74%, nearly identical to the full S&P 500's 9.71%; the return difference across all sector exclusions was only 50 basis points (range: 9.44%–9.94%).
Data Sources: IPCC Sixth Assessment Report, NASA, World Resources Institute (WRI).
Grantham's "race" metaphor is validated by data: green technology is developing at a "faster-than-expected pace," but the "composite resistance" formed by ecological degradation, psychological biases, and institutional inertia has left humanity in a state of "losing ground." Technological breakthroughs must be synchronized with policy innovation, social mobilization, and leadership renewal; otherwise, there is a risk of falling into a "techno-optimism trap"—where technological potential is offset by systemic lag.