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Skyrocketing animal diversity a half-billion years ago was linked to spikes and dips in marine oxygen levels, according to a detailed geological study.
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.
If highly repetitive gene-regulating sequences in DNA are easily lost, that may explain why some adaptations evolve quickly and repeatedly.
Jellyfish didn’t need novel genes to take an evolutionary leap in complexity.