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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.
