If you’re looking to pitch Inspire magazine, al-Qaida’s English-language webzine, you should know there’s been a little bit of editorial turnover.

On Friday morning, Yemeni and U.S. officials announced that al-Qaida preacher Anwar al-Awalaki was killed while traveling through southern Yemen. He wasn’t the only one. The Yemeni government also claims that Samir Khan, the North Carolina man who fled to Yemen to edit Inspire, also died in the strike that killed Awlaki. It’s not exactly the greatest time for al-Qaida’s meager American contingent.

The death of Awlaki, a popular jihadi cleric and...

Though some research suggests that women unconsciously advertise their fertility, a new study shows that their voices are misleading to would-be mates.

Just before ovulation, when women are at their most fertile, their voices become higher-pitched — but the same happens after ovulation, when they’re less fertile.

“Other species have very obvious indicators of fertility, like the sexual swellings of Barbary macaques,” said Julia Fischer, a vocalization researcher at the German Primate Center in Göttingen, Germany. “We’d like to know if there is some comparable signal in humans.”

Evolutionary...