Big Amygdala, Big Social Life
The amygdala is a brain structure crucial for regulating emotions. But the size of the amygdala also reveals just how rich and varied a social life a person leads.
The bigger your amygdala is, the bigger your social network. This new research follows up on previous studies that had demonstrated a similar link between amygdala size and social complexity in primates. It's a simple but powerful link: the more people you regularly interact with, the bigger your amygdala. ... What this really speaks to is the so-called "social brain hypothesis", which theorizes that our amygdalas evolved in part to deal with the complexities of human social life. This is more compelling evidence that fundamentally we are meant to be social animals.
Giving our solar system a "slap in the face"
- A stream of galactic debris is hurtling at us, pulling dark matter along with it
- It's traveling so quickly it's been described as a hurricane of dark matter
- Scientists are excited to set their particle detectors at the onslffaught
Two massive clouds of dust in orbit around the Earth have been discussed for years and finally proven to exist.
- Hungarian astronomers have proven the existence of two "pseudo-satellites" in orbit around the earth.
- These dust clouds were first discovered in the sixties, but are so difficult to spot that scientists have debated their existence since then.
- The findings may be used to decide where to put satellites in the future and will have to be considered when interplanetary space missions are undertaken.
Once again, our circadian rhythm points the way.
- Seven individuals were locked inside a windowless, internetless room for 37 days.
- While at rest, they burned 130 more calories at 5 p.m. than at 5 a.m.
- Morning time again shown not to be the best time to eat.
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