# Global shifts toward strong sustainability models > Live situation record from CLSTR: https://clstr.news/situations/global-shifts-toward-strong-sustainability-models > Updated: 2026-09-27T09:38:25.000Z. Sources: 4. Developments: 2. Discussions regarding sustainability are evolving toward integrated models that prioritize environmental health as a prerequisite for economic and social stability. In Chile, Cristian Echeverría Leal of the University of Concepción advocates for ‘strong sustainability.’ This framework argues that natural capital provides irreplaceable functions—such as water regulation, carbon storage, and genetic diversity—that cannot be substituted by technology or economic resources. This stands in contrast to ‘weak sustainability,’ which suggests environmental damage can be compensated for with other forms of capital. In Spain, efforts to promote sustainability as a business investment have been highlighted by the Fundación MAS and the UN Global Compact Spain. Corporate leaders have discussed integrating environmental and social commitments into management to enhance competitiveness through circular economy practices and decarbonization projects. ## Timeline ### 2026-09-27: Strong sustainability concept emphasizes irreplaceable natural capital Cristian Echeverría Leal advocates for 'strong sustainability,' arguing that critical natural capital and ecosystem functions cannot be replaced by economic or technological means. 2 sources. https://clstr.news/cluster/strong-sustainability-concept-emphasizes-irreplaceable-natural-capital ### 2026-09-24: Sustainability models shift toward strong environmental protection and business investment Experts and business leaders are advocating for stronger sustainability models, treating natural capital as irreplaceable and viewing environmental responsibility as a vital corporate investment. 2 sources. https://clstr.news/cluster/sustainability-models-shift-toward-strong-environmental-protection-and-business-investment --- Cite as: Global shifts toward strong sustainability models. CLSTR, https://clstr.news/situations/global-shifts-toward-strong-sustainability-models