Meghan Rosen

All Stories by Meghan Rosen

  1. mammal survivors
    Paleontology

    With dinosaurs out of the way, mammals had a chance to thrive

    The animals that lived through the great extinction event had a range of survival strategies to get them through.

  2. illustration of giant otters
    Paleontology

    Ancient otter of unusual size unearthed in China

    Fossils unearthed in China reveal a newly discovered, now-extinct species of otter that lived some 6.2 million years ago.

  3. illustration of giant otters
    Paleontology

    Ancient giant otter unearthed in China

    Fossils unearthed in China reveal a newly discovered, now-extinct species of otter that lived some 6.2 million years ago.

  4. robot heart
    Tech

    Heart-hugging robot does the twist (and squeeze)

    A robotic sleeve that slips around the heart mimics the heart’s natural movement, squeezing and twisting to pump blood in pigs. If it works in humans, it could buy time for heart failure patients awaiting a transplant.

  5. peanuts
    Health & Medicine

    Though complex, new peanut allergy guidelines are based on science

    Unlike some past recommendations, new guidelines state that introducing babies to peanut-containing foods early is generally OK, with certain caveats.

  6. molecular knot
    Chemistry

    New molecular knot is most complex yet

    The knot is woven from 192 atoms of carbon, hydrogen, oxygen and nitrogen and forms a triple braid with eight crossing points.

  7. tomatillo fossil
    Paleontology

    Tomatillo fossil is oldest nightshade plant

    Two 52-million-year-old tomatillo fossils in Patagonia push the origin of nightshade plants back millions of years, to the time when dinosaurs roamed.

  8. woman putting ebola vaccine into canister
    Health & Medicine

    Ebola vaccine proves effective

    The Ebola vaccine rVSV-ZEBOV proved effective at stopping the spread of the virus in a clinical trial in West Africa.

  9. woman putting ebola vaccine into canister
    Health & Medicine

    Ebola vaccine proves effective, final trial results show

    The Ebola vaccine rVSV-ZEBOV proved effective at stopping the spread of the virus in a clinical trial in West Africa.

  10. phagocytosis
    Tech

    Cells snack on nanowires

    Human cells eat silicon nanowires in a process called phagocytosis. Nanowire-infused cells could be a step towards biological electronic devices.

  11. Health & Medicine

    Birth defects occur in 1 in 10 pregnancies with first trimester Zika infection

    About 6 percent of U.S. women infected with Zika virus have infants or fetuses with birth defects, according to preliminary CDC results. For women infected in the first trimester, the number is even higher: nearly 11 percent.

  12. Brazilian woman with child
    Health & Medicine

    Year in review: Zika virus devastates Brazil and spreads fear across Americas

    The increase in microcephaly in Brazil has spread fear of Zika infection across the Americas.