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Letters
Yawn and open your ears I read with interest your article on yawning (“Yawn,” SN: 5/7/11, p. 28). Over the years I have formulated a private theory on at least one of the reasons why we yawn and would like to share my speculations with your readership. My insight essentially began when I noticed that […]
- Paleontology
Dinosaurs died of rickets
After more than 80 years, a theory that too little vitamin D led to the demise of the dinos still awaits a shred of evidence.
- Health & Medicine
Body & Brain
The right speed for a caress, plus the punny brain, rocking babies and more in this week’s news.
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- Psychology
Sleeping babies learn in an eyeblink
To learn about spoken words and other sounds, 1-month-old babies sleep on it.
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- Space
Most distant quasar raises questions
Superbright object appeared surprisingly soon after the Big Bang, challenging some theories about how black holes arose.
- Life
Alzheimer’s plaques due to purging flaw
A gene controls the clearance of a protein that accumulates in the brains of people with the condition.
- Space
Atom & Cosmos
When Jupiter aligns with Mars’ moon, plus a salty Saturnian moon and an eye-catching comet in this week’s news.
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- Earth
BPA makes male mice less macho
Studies show that exposures in the womb or during adolescence can erase masculine habits or reverse sexes' behavior.
