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Researchers struggle to incorporate ongoing evolutionary discoveries into an animal classification scheme older than Darwin.
Surviving fragments of genetic material preserved in sediments allow scientists to see the full diversity of past life — even microbes.
New work raises the estimated diversity of viruses in the seas more than twelvefold and lays the groundwork for a better understanding of their impact on global nutrient cycles.
The rainbow of pigments that animals use for blood illustrates a central truth of evolution.
Researchers hope that the genes of a glowing squid can illuminate how animals evolved organs for beneficial bacteria.
With the help of deep learning techniques, paleoanthropologists find evidence of long-lost branches on the human family tree.
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