Rich nations exporting old gas cars could damage climate goals

As wealthy countries electrify their fleets, they are exporting millions of used gas-powered vehicles to developing nations, threatening efforts to curb emissions and worsening air quality.

David Zipper reports for Vox.


In short:

  • Rich nations are sending millions of gas cars to the Global South, adding to emissions rather than reducing them.
  • These used cars are often outdated and lack modern emissions or safety features, worsening pollution and road conditions.
  • Developing countries have weak regulations, making it easy for low-quality vehicles to flood their markets.

Key quote:

"I'm really worried that everything is going to be gas vehicles for many years, maybe decades."

— Godwin Ayetor, senior lecturer, Kwame Nkrumah University of Science and Technology

Why this matters:

A surge in gas-powered cars in developing nations will increase global emissions, hindering efforts to tackle climate change. Without stricter regulations, these countries risk becoming dumping grounds for polluting vehicles, undermining long-term sustainability and health outcomes.

Related EHN coverage: A century of tragedy: How the car and gas industry knew about the health risks of leaded fuel but sold it for 100 years anyway

A hummingbird lands on a flower

Toxic chemicals and climate change work together to harm fertility across species

In a recent review published in NPJ Emerging Contaminants, researchers examine how toxic chemicals can reduce fertility in both humans and wildlife, and how these effects are worsened by climate change.


In short:

  • Animals - including insects, fish, reptiles, birds, humans, and other mammals - are constantly simultaneously exposed to synthetic chemicals and the impacts of climate change, including rising temperatures.
  • Both of these stressors can harm fertility, and many of the impacts found are similar across species, such as effects on sperm and eggs.
  • The stress caused by these exposures also impacts overall health, harming animals’ ability to adapt to a changing environment and worsening global biodiversity loss.


Key quote:

“To build a sustainable future, we must recognize that chemicals, once released, don’t simply disappear. Instead, they contribute to the larger issue of driving humanity towards the exceedance of planetary boundaries when considered in combination with climate change and other planetary-level impacts.”


Why this matters:

While climate change and toxic endocrine disrupting chemicals (EDCs) are both individually well-established as health threats, few studies have examined the implications of the widespread simultaneous exposure experienced by humans and wildlife. Many EDCs can also impact health across multiple generations, meaning their harm continues long after the original exposure. To better tackle the issue of EDCs, the authors of this study emphasize the need for strong regulations that address chemicals by class, rather than individually.


Related EHN coverage:


More resources:


Brander, S. et al. (2026). Impacts of environmental stressors on fertility and fecundity across taxa, with implications for planetary health. NPJ Emerging Contaminants.

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