Why Do We Yawn?
Why Do We Yawn?
The Funniest Commencement Speeches of 2015
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Researchers are starting to unravel the mystery surrounding one of the most common behaviors: the yawn. WSJ's Jonathan Rockoff and evolutionary psychologist Dr. Andrew Gallup explain new studies suggesting it's a way of keeping your brain sharp. Science has disproved the theory that it's the body's way of sending oxygen to your brain when deprived. Says Rockoff, one of the leading theories is that yawning is a "cranial air conditioner." In times of stress and anxiety, we experience a slight rise in brain temperature. So the body steps in to cool it off.
The class of 2015 was sent into the world this month, with words of wisdom, inspiration, and even a few laughs. Here are some highlights from our favorite commencement speeches this May.
FIFA delegates will soon meet to a elect a new president. But what looks like a democratic process isn't without criticism. WSJ's Jonathan Clegg reports. Photo: Getty
Barron's Jack Hough previews the new issue of the magazine, including a cover story on the so-called "robo advisor." Photo: AP
U.S. stocks ended slightly lower Friday, capping off a week of low trading volumes and no market-moving catalysts. Uber is in talks for a $1 billion credit facility with six to seven banks. Photo: Getty
The State Department released nearly 300 emails that former Secretary of State Hillary Clinton sent and received in the aftermath of the September 2012 attacks on an American diplomatic facility in Benghazi, Libya. WSJ's Aaron Zitner reports. Photo: AP
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