Tina Hesman Saey

Tina Hesman Saey

Senior Writer, Molecular Biology

Senior writer Tina Hesman Saey is a geneticist-turned-science writer who covers all things microscopic and a few too big to be viewed under a microscope. She is an honors graduate of the University of Nebraska-Lincoln where she did research on tobacco plants and ethanol-producing bacteria. She spent a year as a Fulbright scholar at the Georg-August University in Göttingen, Germany, studying microbiology and traveling.  Her work on how yeast turn on and off one gene earned her a Ph.D. in molecular genetics at Washington University in St. Louis. Tina then rounded out her degree collection with a master’s in science journalism from Boston University. She interned at the Dallas Morning News and Science News before returning to St. Louis to cover biotechnology, genetics and medical science for the St. Louis Post-Dispatch. After a seven year stint as a newspaper reporter, she returned to Science News. Her work has been honored by the Endocrine Society, the Genetics Society of America and by journalism organizations.

All Stories by Tina Hesman Saey

  1. image of rows of green surgical masks on a yellow background
    Health & Medicine

    How to interpret the CDC’s new mask guidelines

    Based on the CDC’s new metrics, most people no longer need to wear masks in most situations, but that could change.

  2. illustration of of coronavirus spike proteins grabbing onto the surface of cells
    Health & Medicine

    How omicron’s mutations make it the most infectious coronavirus variant yet

    With its mishmash of mutations, omicron has a unique anatomy that has helped fuel its dominance.

  3. illustration of three scientists looking at DNA structure amid a spacetime grid

    How the Human Genome Project revolutionized understanding of our DNA

    Completion of the Human Genome Project was a huge milestone, but there’s more work to do to ensure equitable access to the information in our DNA.

  4. photo of a free covid testing sign and people standing in line to be tested
    Health & Medicine

    Omicron forces us to rethink COVID-19 testing and treatments

    At-home rapid tests may miss the speedy variant early on, and some treatments, such as some monoclonal antibodies, no longer work.

  5. photo of someone pricking a finger to test blood sugar levels
    Health & Medicine

    The coronavirus may cause fat cells to miscommunicate, leading to diabetes

    Researchers are homing in on a surprising cause of high blood sugar in COVID-19 patients and possibly what to do about it.

  6. photo of stacked boxes of BinaxNOW antigen tests
    Health & Medicine

    COVID-19 testing is complicated right now. Here are answers to 6 big questions

    There are two major categories of COVID-19 diagnostic tests. Here’s what you need to know when deciding whether to take an at-home test or head to the doctor.

  7. photo of someone holding a vial of the J&J covid vaccine with a syringe
    Health & Medicine

    The CDC recommends mRNA COVID-19 vaccines over J&J’s, citing fewer risks

    Pfizer’s and Moderna's vaccines are more effective and cause fewer serious side effects than Johnson & Johnson’s jab, new data show.

  8. A device captures aerosols from the breath of a COVID patient
    Health & Medicine

    Why it matters that health agencies finally said the coronavirus is airborne

    Recognizing that the coronavirus spreads through the air reinforced the importance of wearing masks and altered public health recommendations.

  9. illustration of the coronavirus lifecycle
    Health & Medicine

    Why the coronavirus’s delta variant dominated 2021

    Mapping delta’s unique group of mutations and how they enhance the virus’s life cycle show why the variant spread so easily and caused so much havoc.

  10. a box labeled MERCK Molnupiravir for COVID-19 treatment for emergency use only
    Health & Medicine

    Merck’s COVID-19 pill may soon be here. How well will it work?

    Once hailed as a potential game changer, more complete data now reveal drawbacks of Merck’s antiviral COVID-19 pill, molnupiravir.

  11. a nurse draws up a syringe from a vial of COVID-19 vaccine
    Health & Medicine

    No, COVID-19 vaccines won’t make you infertile

    Contrary to misinformation spread by Aaron Rodgers and Nicki Minaj, neither the Pfizer, Moderna nor J&J vaccines cause infertility, data show.

  12. vials of covid-19 vaccines
    Health & Medicine

    How to choose a COVID-19 vaccine booster shot

    To help you choose between the Pfizer, Moderna and Johnson & Johnson COVID-19 boosters, one reporter looked to the evidence and consulted experts.