Brain growth in babies is linked to the amount of time and energy mothers "invest," according to new research. The study of 128 mammal species, including humans, shows that brain growth in babies is determined by the duration of pregnancy and how long they suckle. The research concludes that the longer the pregnancy and breastfeeding period in mammals, the bigger the baby
Free will may be an illusion. Yet we persist in believing we are the masters of our fates—and that belief affects how we act. Think you determine the course of your life and you're likely to work harder toward your goals and feel better about yourself too. Think you don't, and you're likelier to behave in ways that fulfill that prophesy.
One of the findings that really astounds is that the Longevity Project participants who were the most cheerful and had the best sense of humor as kids lived shorter lives, on average, than those who were less cheerful and joking. It was the most prudent and persistent individuals who stayed healthiest and lived the longest.
The planet's biggest brains respond to this year's Edge question: 'What scientific concept would improve everybody's cognitive toolkit?'
