Sturgeons are one of the oldest groups of fishes. Sporting an armor of five rows of bony, modified scales called dermal scutes and a sharklike tail fin, this group of several-hundred-pound beasts has survived for approximately 160 million years^[1]. Because their physical appearance has changed very little over time, supported by a slow rate...

Of the 8.7 million species on Earth^[1], why are human beings the only one that paints self-portraits, walks on the Moon and worships gods?

For decades, many scholars have argued that the difference stems from our ability to learn from each other^[2]. Through techniques such as teaching and imitation, we can create and transmit complicated...

Social media is a complex environment that presents both opportunities and threats for adolescents, with self-expression and emotional support on the one hand and body-shaming, cyberbullying and addictive behaviors on the other. This complexity underscores the challenge to regulating teen social media use, but it also points to another avenue for...