Adenoviruses as seen under an electron microscope

Alive—or just replicators?

Viruses are called organisms at the edge of life.

Life and Viruses: On the Edge

Close-up 3D render of virus particles floating on a dark green background, showcasing detailed virus structure.

How they pull it off

They carry genes, evolve by natural selection, and self‑assemble into copies.

Life and Viruses: On the Edge

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