More from RJ Mackenzie (Page 2)

a wrinkly hand
Ask Us Anything

Why do our fingers wrinkle in water? It’s much deeper than skin.

By RJ Mackenzie

A low-polygon human brain dissolves from top to bottom, visually representing the progression of memory loss
Diseases

How an unusual medical procedure transmitted Alzheimer’s

By RJ Mackenzie

Man shakes his head while being doused with water
Ask Us Anything

How is head hair different from body hair? 

By RJ Mackenzie

an illustration of two cockroaches
Insects

Why cockroaches are so resilient

By RJ Mackenzie

an arm covered in a rose tattoo
Ask Us Anything

Where does tattoo ink go in your body? There’s one particular spot.

By RJ Mackenzie

a body on a morgue table with only the feet showing and a toe tag on the big toe
Medicine

What happens when you donate your body to science? 

By RJ Mackenzie

couple in bed
Ask Us Anything

Do aphrodisiacs work? What the science says.

By RJ Mackenzie

Beautiful cat on red background
Cats

Why do cats make biscuits?

By RJ Mackenzie

man sneezing on a colorful, illustrated background
Health

Why do some people sneeze so loudly?

By RJ Mackenzie