Full disclosure: The first thing I said when I saw that Rob Delaney would be talking to NPR's Audie Cornish on today's All Things Considered was that I was curious to see whether he had ever said anything on Twitter — where he has almost 670,000 followers (including me) as of this writing — that they thought they could read on the radio. It's an exaggeration. But not by that much.
Why people yawn is a mystery. But yawning starts in the womb.
Past studies have used ultrasound images to show fetuses yawning, but some scientists have argued that real yawns were getting confused with fetuses simply opening their mouths.
So Nadja Reissland, a researcher at the University of Durham in the United Kingdom, used a more detailed ultrasound technique to get images of fetal faces that could distinguish a true yawn from just an open mouth.
In the Gaza Strip fighting, where a cease-fire was reached Wednesday, the Israeli military pounded Gaza with hundreds of airstrikes. Hamas, the militant Palestinian group that rules Gaza, launched hundreds of rocket attacks on Israel.
The weeklong battle temporarily diverted attention from Iran, the archenemy of Israel and a key ally of Hamas. Israeli leaders have threatened to strike Iran over its nuclear program.
Yet the Gaza fight may offer insights into what a possible confrontation between Israel and Iran would look like.