More from RJ Mackenzie (Page 2)

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