Paris plans to swap cars for trees in a bold climate push

By 2030, Paris aims to remove 60,000 parking spaces, replacing them with trees and green spaces to combat urban heat and reduce car dependence.

Feargus O'Sullivan reports for Bloomberg.


In short:

  • Paris’ new 2024-2030 Climate Plan proposes creating 300 hectares of green space, including tree-lined streets and “oasis squares” in all 20 arrondissements.
  • The plan addresses extreme heat with cooling centers, reflective roofs on public buildings and adjusted work schedules for outdoor laborers.
  • Traffic measures include converting lanes for public transit, carpooling and lowering speed limits, while expanding pedestrian-friendly zones across the city.

Key quote:

“This plan promises to deliver a city that’s greener, more resilient against extreme weather, more pedestrian-friendly — and freer of cars."

— Feargus O'Sullivan, Bloomberg

Why this matters:

Paris’ ambitious efforts tackle two major urban challenges: extreme heat and pollution. By prioritizing green spaces and reducing car reliance, Paris is planting the seeds of a future where cities don’t just survive climate chaos—they thrive. It’s the kind of green revolution the planet’s overheated cities are desperate to replicate. Read more: How youth can battle extreme heat in their communities.

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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