What’s Behind the Numbers?

To grasp the magnitude of the damage caused by the world’s top polluters, let’s examine some key data points.

• 111 companies
• $28 trillion in damages since the early 1990s
• Extreme heat linked to carbon dioxide and methane emissions
• $9 trillion attributable to the top five companies
• $3.6 trillion in heat-related losses linked to Chevron
• $502 billion in damage per one percent of greenhouse gas emissions

The study suggests that the world’s top fossil fuel companies, including Saudi Aramco, Gazprom, and Chevron, are responsible for a staggering $28 trillion in climate damages since the early 1990s. This amount is roughly equivalent to the entire GDP of many countries.

A Closer Look at the Damage

The damage caused by these companies can be broken down into several key areas, including:

1. Extreme heat
2. Wildfires
3. Crop damage
4. Extreme weather events

These areas are all linked to the release of greenhouse gases, such as carbon dioxide and methane, into the atmosphere.

“We argue that the scientific case for climate liability is closed,” said study author Justin Mankin, climate researcher at Dartmouth College.

Mankin and his team used advanced climate attribution science to link emissions from these companies to specific damages. This method allows scientists to track the effects of climate change almost in real-time.

Who’s to Blame?

The top five companies responsible for the most damage are:
1. Saudi Aramco
2. Gazprom
3. Chevron
4. ExxonMobil
5. BP
These companies are responsible for around $9 trillion of the total damage, or about a third of the total.

A Global Problem

The study suggests that the damage caused by these companies is not limited to a single region or country. In fact, the costs from extreme heat are distributed globally, with some countries experiencing more significant impacts than others. According to the researchers, every one percent of greenhouse gas emissions since 1990 has caused $502 billion in damage from heat alone. This amount does not include costs incurred by other extreme weather events, such as hurricanes, droughts, and floods.

What’s Next?

The study’s findings have significant implications for the way we think about climate liability. It suggests that the world’s top fossil fuel companies are not only responsible for the damage they’ve caused, but also have a moral obligation to pay for it. Already, local and national governments have sought compensation from fossil fuel companies, but many of these actions are being challenged or slowed in court. The research firm Zero Carbon Analytics counts 68 lawsuits filed globally about climate change damage, with more than half of them in the United States. “Just as a pharmaceutical company would not be absolved from the negative effects of a drug by the benefits of that drug, fossil fuel companies should not be excused for the damage they’ve caused by the prosperity their products have generated,” said Callahan.

The Way Forward

The study’s lead author, Professor Mankin, believes that the framework developed by his team can provide robust emissions-based attributions of climate damages at the corporate scale. This can help courts better evaluate liability claims for the losses and disruptions resulting from human-caused climate change. However, not all experts agree that the numbers are accurate. Michael Mann, a University of Pennsylvania climate scientist, thinks that there are many other climate variables unaccounted for, which could lead to a vast underestimate of the damage caused by these companies. Key Takeaways
* The world’s top fossil fuel companies are responsible for $28 trillion in climate damages since the early 1990s. * The top five companies are responsible for around $9 trillion of the total damage. * The study suggests that the world’s top fossil fuel companies have a moral obligation to pay for the damage they’ve caused. * The framework developed by the study’s authors can provide robust emissions-based attributions of climate damages at the corporate scale.