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E.g., 04/19/2018
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  • Growth Curve

    Should you bank your baby’s umbilical cord blood? Here’s a guide for thinking through the issue.

    With the promise and pitfalls of umbilical cord blood samples in mind, how should parents decide whether to put their baby’s blood on ice, either for their own family’s future use or as a donation for the greater good? It’s a tricky calculation, one that changes based on a family’s risk threshold, dreams for the future and, of course, money.

    Instead of floundering about aimlessly, let’s...

    04/11/2018 - 07:00 Pregnancy, Health
  • 50 years on, vaccines have eliminated measles from the Americas

    Mexico takes vaccine to hinterland

    The campaign to eradicate measles in Mexico is going into the hinterland areas. Mobile brigades will use live virus vaccine produced in laboratories of the Republic’s Department of Health. Measles kills 10,000 Mexican children a year. — Science News, April 13, 1968

    Update 

    The last measles case to originate in Mexico occurred in 1995. In 2016...

    04/10/2018 - 15:00 Health
  • Reviews & Previews

    Fossils sparked Charles Darwin’s imagination

    Darwin’s FossilsAdrian ListerSmithsonian Books, $19.95

    Charles Darwin famously derived his theory of evolution from observations he made of species and their geographic distributions during his five-year voyage around the world on the H.M.S. Beagle. But in the introduction of On the Origin of Species, the naturalist also cites another influence: the thousands of fossils that he...

    04/08/2018 - 08:00 Evolution, History of Science, Paleontology
  • Editor's Note

    How many scientists do you know in real life?

    The death of physicist Stephen Hawking on March 14 at age 76 sparked a global outpouring of admiration. In our appreciation, Science News physics writer Emily Conover calls him “a black hole whisperer who divined the secrets of the universe’s most inscrutable objects." He was also among the very few cosmologists (hello, Carl Sagan) to have written an international best seller; Hawking...
    04/05/2018 - 07:53 Science & Society, Physics
  • Letters to the Editor

    Readers debate dinosaur designation and more

    Diagnosis dinosaur

    Some scientists are shaking up the dinosaur family tree and raising questions about which features define the ancient reptiles, Carolyn Gramling reported in “New fossils are redefining what makes a dinosaur” (SN: 3/3/18, p. 18).

    “I am a bit put out by the continuing references to dinosaurs as being reptiles,” reader David Persuitte wrote. Dinosaurs’ legs were...

    04/05/2018 - 07:52 Paleontology, Evolution, Planetary Science
  • Feature

    Flying insects tell tales of long-distance migrations

    Every autumn, a quiet mountain pass in the Swiss Alps turns into an insect superhighway. For a couple of months, the air thickens as millions of migrating flies, moths and butterflies make their way through a narrow opening in the mountains. For Myles Menz, it’s a front-row seat to one of the greatest movements in the animal kingdom.

    Menz, an ecologist at the University of Bern in...

    04/05/2018 - 06:00 Animals, Ecology
  • Feature

    Are we ready for the deadly heat waves of the future?

    Some victims were found at home. An 84-year-old woman who’d spent over half her life in the same Sacramento, Calif., apartment died near her front door, gripping her keys. A World War II veteran succumbed in his bedroom. Many died outside, including a hiker who perished on the Pacific Crest Trail, his water bottles empty.

    The killer? Heat. Hundreds of others lost their lives when a...

    04/03/2018 - 15:00 Health, Climate
  • Essay

    How physicists will remember Stephen Hawking

    Stephen Hawking, a black hole whisperer who divined the secrets of the universe’s most inscrutable objects, left a legacy of cosmological puzzles sparked by his work, and inspired a generation of scientists who grew up reading his books.

    Upon Hawking’s death on March 14 at age 76, his most famous discovery — that black holes aren’t entirely black, but emit faint...

    04/03/2018 - 12:18 Physics, Science & Society
  • Reviews & Previews

    Why the Nobel Prize might need a makeover

    Losing the Nobel PrizeBrian KeatingW.W. Norton & Co., $27.95

    Dust may seem insignificant, but in science, it can cost you a Nobel Prize.

    That’s what happened to Brian Keating, a major contributor to the BICEP2 team that claimed in 2014 to have found the first definitive evidence of cosmic inflation (SN: 4/5/14, p. 6), a period of extremely rapid expansion just after the...

    04/02/2018 - 09:00 Cosmology, History of Science, Astronomy
  • Reviews & Previews

    The truth about animals isn’t always pretty

    The Truth About AnimalsLucy CookeBasic Books, $28

    Nearly 2,000 years ago, Pliny the Elder reported that hippopotamuses find relief from overeating by piercing their skin in a hippo version of bloodletting. Eventually, scientists learned that the oozing red stuff Pliny described isn’t even blood but a secretion that may have antibacterial and sun-blocking properties. While...

    04/01/2018 - 08:00 Animals, History of Science