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Real-time fish interaction enlarges young guppy brains, while screen time falls short
Real-time fish interaction enlarges young guppy brains, while screen time falls short Sadie Harley Scientific Editor Robert Egan Associate Editor Young guppies who were able to see and interact with live fish developed larger brains than guppies who only saw other fish on a screen. This is shown in a new study from Stockholm University, published in Biology Letters. The findings suggest that live social interaction in real time may be important for brain development.
Earth's first animals barely evolved until sex changed everything
Earth's first animals barely evolved until sex changed everything - Date: - June 10, 2026 - Source: - University of Cambridge - Summary: - Earth’s earliest animals may have held evolution back because they reproduced asexually, creating low-competition communities that changed very little over time. When environmental pressures pushed them toward sexual reproduction, biodiversity exploded and evolution accelerated dramatically.
A lack of sex held back life's diversity for millions of years, fossil study finds
A lack of sex held back life's diversity for millions of years, fossil study finds Sadie Harley Scientific Editor Robert Egan Associate Editor The way that Earth's first animals reproduced held back life's diversity for millions of years, until stress and competition led to the development of sexual reproduction, which in turn accelerated the pace of evolution. Researchers from the University of Cambridge studied fossils from the oldest-known animals on Earth, dating from 574 million years...
Whole-genome duplication shaped cell-type evolution in the vertebrate brain
Abstract The complex brains of vertebrates have more cell types than those of their closest relatives. Whole-genome duplications (WGDs) occurred during early vertebrate evolution1, but it is unclear whether the duplicated genes (ohnologues) facilitated cell-type evolution. Here using brain single-cell transcriptomes from five chordates—human2, mouse3, lizard4, lamprey5 and amphioxus—we report that many cell-type families with conserved core transcription factors in vertebrates do not show...
Echoes of the Red Terror: Remembering victims of political repression and famine in Kazakhstan
Every year on 31 May, Kazakhstan commemorates the millions who perished during the Soviet-era famine and political repression. People in Kazakhstan remember the millions killed in the famine and political persecutions of the early Soviet era with a solemn ceremony on 31 May. Kazakh President Kassym-Jomart Tokayev, during a wreath-laying ceremony, highlighted that the losses the nation sustained in the 20th century should not be forgotten.