From Protecting Nature to Protecting Biodiversity: A History of Debate

Dialogues économiques
How do you measure a concept as obscure as biodiversity? Indicators are one way to do so. But the economists Pierre Courtois, Charles Figuières, and Chloé Mulier reveal that these may not all lead to the same result. For example, Calyampudi Radhakrishna Rao's and Martin Weitzman’s indicators each lead to policies that are sometimes on complete opposite sides of the spectrum. While one recommends saving the most fragile species, the other recommends saving the most robust! So, does protecting the environment come down to perspective?
January 19th 2022

Previously issued

  • Press

In Spain, economic policy has been conducive and has benefited from favourable circumstances

Only in French - An op-ed by Cecilia García Peñalosa (CNRS, EHESS, AMSE) and Alain Trannoy (EHESS, AMSE) published in the newspaper Le Monde.
December 22nd 2025
  • Dialogues économiques

The True Price of CO₂

In 2024, a grim record was set: it was the hottest year ever recorded on Earth. The signs of climate upheaval are now visible to all, as global warming manifests itself in a rapid rise in extreme weather events. In theory, the solution is straightforward: we must stop burning fossil fuels. In practice, phasing out energy sources so firmly entrenched in contemporary societies is an immense challenge. To reduce CO₂ emissions, economists — trained in cost–benefit analysis — can help policymakers design strategies that are both effective and socially acceptable.
December 10th 2025
  • Press

Healers are easy targets

Only in French- An op-ed by Daniel Ventosa-Santaulària (CIDE), visiting professor at Aix-Marseille School of Economics, published in La Provence.
December 04th 2025