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  • WHERE I WORK

I study small organisms to tackle big climate problems

Marine biologist Gabriel Renato Castro cultivates compounds from cyanobacteria to support agriculture and the environment.
  1. Nikki Forrester

    1. Nikki Forrester is a science journalist based in Davis, West Virginia.

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Gabriel Renato Castro stands in a lab looking at some flasks filled with green liquid

Gabriel Renato Castro is the founder and chief executive of Spiral Blue Food Spa in Chincolco, Chile. Credit: Karl Mancini/Pulitzer Centre

“Some of the oldest organisms on Earth are cyanobacteria: they have a fossil record dating back 3,500 million years. These photosynthesizing life forms have experienced extreme environmental events — from very cold periods to atmospheric pollution to mass extinctions. By studying their resilient nature, we can find solutions for how to adapt to the climate changes we’re experiencing now.

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Nature 627, 696 (2024)

doi: https://doi.org/10.1038/d41586-024-00820-3

This interview has been edited for length and clarity.

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