Tag: Zarin Machanda

  • Nation & World

    Why do we get so picky about friendship late in life? Ask the chimps

    Understanding why older chimps tend to favor small circles of meaningful, established friendships rather than seek new ones may help scientists gain a better picture of what healthy human aging should look like and what triggers this social change.

    5 minutes
    Group of chimps.
  • Nation & World

    Watching teeth grow

    For more than two decades, scientists have relied on studies linking tooth development in juvenile primates with their weaning as a rough proxy for understanding similar landmarks in the evolution of early humans. New research from Harvard, however, challenges that thinking by showing that tooth development and weaning aren’t as closely related as previously thought.

    6 minutes
  • Nation & World

    The efficient caveman cook

    Harvard researchers say the rise of cooking likely occurred more than 1.9 million years ago and bestowed on human ancestors a gift of time in the form of hours each day not spent eating.

    3 minutes