A groundbreaking discovery has reshaped our understanding of evolution—scientists have identified the first nitrogen-fixing organelle, the nitroplast, inside the marine alga Braarudosphaera bigelowii. This finding challenges long-held beliefs about nitrogen fixation and provides a missing link in the evolution of eukaryotic cells. In this episode of Youthquake, host Can Sinan is joined by guest Tugra to explore the origins of the nitroplast, how it evolved from an ancient symbiotic bacterium, and why it matters for both evolutionary biology and sustainability. Join us as we unpack the science, the implications, and the surprising twists in evolution with insights from leading microbiologists and evolutionary experts.