The deep sea is one of Earth’s last frontiers—and the battle over who gets to mine it is heating up. This week on the Scientista Podcast, host Monica Medina sits down with Leticia Carvalho, Secretary-General of the International Seabed Authority, to talk about her mission to regulate deep sea mining before it’s too late.

From overseeing negotiations in Jamaica to fending off pressure from billion-dollar mining interests, Carvalho is holding the line on behalf of the planet. She shares her journey from oceanographer to global regulator, the risks of unregulated exploitation, and what it’s like to be a woman leading in a male-dominated space.

This is a rare inside look at the science, diplomacy, and power struggles shaping the future of our ocean.

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