Over 70 years ago, Roald Dahl proposed that plants could scream in a fictional story called The Sound Machine. He suggested they could shriek — a high-pitched shriek undetectable to the human ear.

Not in a way humans can hear, but in a newly documented study, stressed plants were found to release bursts of ultrasonic sound that resemble faint pops or clicks, similar to bubble wrap snapping.

From "A Star Is Born" to "Star Wars" to "Dial of Destiny," the Wilhelm scream keeps reminding us that movies are fun. When audiences hear the Wilhelm scream in “Dial of Destiny,” it’s sound designer ...