科学与环境

One tiny chemical difference between RNA and DNA may help explain how life began

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Scientists may have found a clue to one of the biggest mysteries surrounding the origin of life: how fragile RNA molecules could gather and survive before cells existed. New research shows that RNA is unusually good at assembling into tiny liquid-like droplets that concentrate mo

Scientists may have found a clue to one of the biggest mysteries surrounding the origin of life: how fragile RNA molecules could gather and survive before cells existed. New research shows that RNA is unusually good at assembling into tiny liquid-like droplets that concentrate molecules and can harden into protective, gel-like structures. Remarkably, much of this behavior may come down to a single oxygen-containing chemical group that RNA has but DNA lacks.

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科学与环境

Scientists may have found a “unifying theory” of chronic fatigue

Scientists found that five seemingly unrelated conditions, including long Covid, ME/CFS, and PTSD, may disrupt many of the same biological networks involved in immunity, metabolism, and cellular energy. The findings could help explain their shared symptoms and may open the door t

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科学与环境

This giant stick insect fooled scientists for decades

Scientists have identified two new species of large Australian stick insects, including one that lays extraordinary “lidded” eggs never before recorded in the group. The discovery also revealed that a familiar stick insect had been misidentified for decades, showing how much biod

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