Uncategorized

  1. Paleontology

    ‘Echidnapus’ hints at a lost age of egg-laying mammals

    The fossil discoveries double the number of known monotreme species during the Cretaceous Period.

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  2. Physics

    The second law of thermodynamics underlies nearly everything. But is it inviolable?

    Two centuries on, scientists are still seeking a proof of the Second Law and why heat always flows from hot to cold.

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  3. Anthropology

    Child sacrifices at famed Maya site were all boys, many closely related

    DNA analysis shows victims in one underground chamber at Chichén Itzá included twins, perhaps representing mythological figures.

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  4. Health & Medicine

    Long COVID finally gets a universal definition

    If broadly adopted, this inclusive description of long COVID will help legitimize the ongoing struggles millions of people are facing post-infection.