News

  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.

    By Carolyn Gramling
  2. 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.

    By Bruce Bower
  3. 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.

    By Tina Hesman Saey
  4. Space

    Human spaceflight’s new era is fraught with medical and ethical questions

    A new project called the Space Omics and Medical Atlas aims to study and document astronaut health as commercial spaceflight starts to take off.