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  • illustration of different systems of a 9.5 week old baby
Your search has returned 23 articles:
  • Growth Curve

    Database provides a rare peek at a human embryo’s first weeks

    When I first found out my daughter existed, she was about half the size of a mini chocolate chip.

    I was six weeks pregnant; she was four weeks into development. (The pregnancy timer officially begins two weeks before conception.) Already, the structures that would become her eyes had formed rudimentary orbs and the four tiny chambers of her heart were taking shape. At this stage of...

    12/06/2016 - 09:00 Child Development, Pregnancy
  • News in Brief

    Body & Brain

    The taste of fat Fat may be ready to join the ranks of sweet, bitter, sour, salty and savory as the sixth basic kind of taste. Fat molecules trigger responses from taste cells in mice by hitting a particular molecular sensor, scientists report in the June 8 Journal of Neuroscience. The results argue against the predominant view that fat is tasteless, loveable for its texture. Mice engineered...

    06/09/2011 - 17:31 Body & Brain, Biomedicine
  • Feature

    Destination brain

    When Lilian Calderón-Garcidueñas recruited children for a study probing the effects of air pollution, Ana was just 7. The trim girl with an above-average IQ of 113 “was bright, very beautiful and clinically healthy,” the physician and toxicologist recalls.

    But now Ana (not her real name) is 11. And after putting her and 54 other children...

    05/07/2010 - 15:18 Pollution
  • Feature

    Science News of the Year 2007

    Tuning In to Science

    In its own way, science is a lot like '60s rock 'n' roll on AM radio. If you're old enough, you remember the slogan: "And the hits just keep on comin'."

    With science, the news just keeps on comin'. Somehow, year after year, science never runs out of hit discoveries. From land-based laboratories to the depths of the oceans to remote realms of the cosmos, intrepid...

    12/18/2007 - 21:49 Humans & Society
  • Food for Thought

    Born to Love Salt

    If you happen to have an unhealthy penchant for salt, it may not be solely your fault. Mom may have to share some of the blame. Or so suggests a small but intriguing body of research.

    The newest of these studies finds that among normal-weight newborns, the smaller a baby is at birth, the more likely it is that he or she will show an early and strong preference for salty fare...

    01/26/2006 - 17:27 Nutrition
  • Feature

    Science News of the Year 2005

    Science News of Yesteryear

    Anthropology & Archaeology

    Astronomy

    Behavior

    Biomedicine

    Botany & Zoology

    Cell & Molecular...

    12/20/2005 - 03:53 Humans & Society
  • Food for Thought

    Understanding Vitamin D Deficiency

    Second of a three-part series on the sunshine vitamin

    Our skin evolved to create vitamin D when it's exposed to the sun's ultraviolet (UV) rays. So, when most of the world's population lived in or near equatorial regions, people had no shortfall of the nutrient, with their bodies making from 10,000 to 20,000 international units (IUs) of this vitamin each day.

    However,...

    04/28/2005 - 20:48 Nutrition
  • Food for Thought

    Chocolate Therapies (with Recipe for Janet’s Chocolate Medicinal Mousse Pie)

    Chocolate has made news over the past few months for the apparently heart-healthy properties of some of its components–antioxidants known as flavonoids (see Chocolate Hearts: Chocolate Hearts.) These findings, together with data reported several years ago on the treats' ability to turn on opiate receptors in the brain (SN: 10/12/96, p. 235), threaten to transform the...

    09/16/2002 - 11:17 Nutrition
  • Feature

    Pregnant—and Still Macho

    One-half of the human race may find the idea more interesting than the other half does, but regardless, there's been plenty of speculation on what the world would be like if males were the ones who got pregnant.

    The more elaborate hypotheses—about warp-speed progress in obstetrics or Tiger Woods endorsing maternity clothes—have yet to...

    09/13/2002 - 15:46 Animals
  • Feature

    Volume Information

    12/18/1999 - 00:00