Navigating the climate and biodiversity frontier

Climate change and biodiversity loss were once seen as niche sustainability concerns. Today they sit at the centre of financial analysis - understanding the science is providing a genuine investment edge.

The investment challenge

For years, many investors treated climate and biodiversity as ethical considerations sitting outside of financial models - as a values overlay rather than a valuation input. Today that view is increasingly hard to sustain. The scientific picture is now clearer and more urgent as the physical impacts become harder to ignore and the remaining room for delay narrows. At the same time, the political environment is less predictable. Recent geopolitical events have reinforced the strategic case for renewable energy and energy independence, while also prompting some countries to increase their reliance on fossil fuels to meet near-term energy-security needs. For investors, the result is not a simpler transition, but a more complex one.

Like geopolitics, demographics, and technological change, climate and nature are reshaping markets. But because the underlying science is less familiar to most investors, its financial implications are more easily overlooked and, at times, mispriced.

A core difficulty is that models used to value companies are largely built around linear, incremental change. Climate and nature risks rarely behave so uniformly. Some impacts are already visible today, but their most significant effects build over time and can accelerate unexpectedly. Emissions accumulate; damage compounds; and beyond certain points, change becomes self-reinforcing and irreversible on any human - or investment - timescale.

Three concepts are particularly useful in understanding how climate and nature risks evolve over time. The carbon budget sets a finite quantity of CO₂ that can be emitted before key warming limits are passed. At current global emissions of roughly 59 gigatonnes of CO₂ equivalent a year, the budget associated with 1.5°C would be exhausted in around seven years, not decades. Planetary boundaries identify nine systems that keep the Earth stable, from freshwater use to biodiversity; seven have now been pushed beyond their safe operating limits. Tipping points are thresholds beyond which natural systems can shift abruptly and, in some cases, irreversibly into a new state. While the timing is debated, scientists warn that several major systems, including ice sheets and coral reefs, may be nearing them.

For investors, these are uncomfortable ideas because they challenge the assumption that risks emerge gradually and can be extrapolated from the past. Together they suggest that environmental change may occur faster, and with greater force, than conventional models imply.

How we - and Berkeley - think about it

The central argument is simple: climate and nature science matters to investors when it changes how they assess risk, value companies, or allocate capital. Through our partnership with UC Berkeley, we can connect scientific insight with the practical implications for investment decision-making.

That partnership lens is particularly valuable when considering the non-linear nature of environmental risk. As Berkeley's Dara O'Rourke (Associate Professor, Dept of Environmental Science, Policy & Management, Rausser College of Natural Resources) puts it: "The market's mistake isn't denying climate risk - it's assuming it will arrive gradually. Ecosystems can look stable right up until they aren't." The investment implication follows directly: if risk is non-linear but priced as if it were, the market may be systematically underestimating the timing and potential scale of change, and timing is often where active managers can add value.

Biodiversity is where this is starkest. Nature is harder to measure than carbon, has no single price signal, and is intensely local, so markets largely ignore it. Yet the economic dependence is enormous. Berkeley's Matthew Potts (Professor; S.J. Hall Chair in Forest Economics, Dept of Environmental Science, Policy & Management, Rausser College of Natural Resources) highlights the concept of option value: the Gila monster, a desert lizard, is proven to be the biological source of the GLP-1 drug, now underpinning a market worth roughly $500 billion. Had the species been lost before its discovery, that option would simply never have existed. As Potts says: "Our wealth of biological diversity represents an amazing library of biological experimentation. Today we risk burning that library down without having read the books."

In practice

So, what does this mean in practice for investors? Climate and nature considerations need to be incorporated into existing investment models, rather than treated as a separate process.  Financial analysis should extend beyond a company's own operations and through its supply chain. Biodiversity risks often emerge in places that are far removed from where a company generates its revenues, making them easy to overlook in traditional financial analysis. And because impacts are cumulative and can accelerate, scenario analysis often becomes more informative than historical averages alone.

For active investors, the goal is not simply to understand these risks, but to identify where they are not yet fully reflected in market prices.

Investment outcomes are ultimately driven by how companies create and preserve value. Climate and nature increasingly influence both. The opportunity for investors is identifying where those effects are not yet fully understood, or fully priced.

What's next

Seeing the science clearly is only the first step. The harder question is how to translate carbon budgets, tipping points, and nature loss into information investors can actually use. In the next article in this series, we explore how data, scenarios, and models can help investors assess the implications of climate and nature risks for companies and portfolios, including where their limitations lie, and where investment judgement still matters.