In today’s Escape: How to control your dreams. Plus, is volcano tourism safe, and guess the age of one of the world’s oldest toys.

But first: Can you picture an apple in your mind? Some can’t—here’s why. 

 PHOTOGRAPH BY JOSE A. BERNAT BACETE, GETTY

Close your eyes and imagine an apple.

Can you see its shape? What color is it? If you find yourself struggling to form a mental image, you might have a condition called aphantasia. Here's what scientists are learning about it—and why it’s more common than you think. 

More stories:
— You can learn to control your dreams. Here’s how.
— Can microdosing psychedelics boost mental health?

PHOTOGRAPH BY THOMAS RABSCH, LAIF/REDUX

PHOTOGRAPH BY JOHN FHÆR ENGEDAL NISSEN, THE NATIONAL MUSEUM OF DENMARK

A new study argues that ancient rattles unearthed in Syria aren’t musical instruments, but toys used to entertain infants. How old are these artifacts?

A. 500 years old
B. 10,300 years old
C. 4,500 years old
D. None of the above

BEFORE YOU GO: Your khaki pants have a history that may surprise you.

Today’s newsletter was edited and curated by Jennifer Baik and produced by Alisher Egamov. Thanks for reading! Did someone forward this to you? Sign up for all our newsletters here.