Cuttlefish, remarkable members of the cephalopod family, have demonstrated a surprising level of intelligence by passing the “marshmallow test” — a classic experiment designed to assess self-control and delayed gratification in humans. In controlled studies, the cuttlefish opted to wait for a more desirable reward rather than immediately consuming a lesser one. This ability to delay gratification suggests that cuttlefish possess complex cognitive functions, including foresight and impulse contro

Scientists Create World’s First Genetically Modified Spiders That Spin Fluorescent Red Silk In a groundbreaking first, scientists at the University of Bayreuth, Germany, have successfully engineered spiders to produce fluorescent red silk using CRISPR-Cas9 gene editing. Published in May 2025, the study marks a major milestone in the genetic modification of arachnids—a long-standing challenge due to their delicate biology and breeding complexity. The researchers worked with the Parasteatoda tepid

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