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Cancer Researchin Science
7 hours ago

Breakthroughs in cancer research highlight promising treatments, from leveraging ancient fungi to mitochondrial theft, alongside celebrating 25 years of human genome advancements.

Overfishing has caused cod to halve in body size since 1990s, study finds

The Guardian - ScienceWednesday, June 25, 2025 at 6:00:36 PM
Overfishing has caused cod to halve in body size since 1990s, study finds
A new study reveals that intensive overfishing hasn't just decimated cod populations—it's literally shrunk the fish. Eastern Baltic cod, which averaged 40cm in length in the 1990s, now measure around 20cm. Researchers found genetic changes driven by relentless fishing pressure, suggesting evolution is favoring smaller, faster-maturing fish.
Editor’s Note: This isn’t just about fewer fish in the sea—it’s about fundamental changes to the species itself. Smaller cod could disrupt ecosystems and fisheries long-term, showing how human activity alters nature in ways we’re only starting to understand. If we want seafood (and healthy oceans) in the future, this is a wake-up call.
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