Articles by John Arnst, Live Science Contributor

John Arnst is a freelance science writer and editor based in Washington, DC. He writes about every corner of life sciences he can get his hands on, and much of his work can be found in the magazine for the American Society for Biochemistry and Molecular Biology, where he was a staff writer for four years. He has degrees in English literature and biology from the University of Florida and two very vocal black cats.

Articles by: John Arnst

Astronaut floating in space. Jonathan Knowles via Getty Images

Why does NASA let male astronauts stay in space longer than females?

By John Arnst published 21 March 22

Here's why NASA has different radiation limits for male and female astronauts, and how these limits may change in the near future.

Black and white cat hiding in a box_ALFSnaiper via Getty Images

Why do cats love boxes so much?

By John Arnst published 28 February 22

It's an instinctual behavior for cats to seek out confined spaces, such as boxes, bags and baskets — Live Science explains why.

A man experienced mania after taking antibiotics for the first time.

Man hallucinates and 'hears God' while on antibiotics. What happened?

By John Arnst published 4 February 22

A man who had never taken antibiotics before ended up with a case of mania after taking medication for bacterial pneumonia.

What is the longest possible walk on Earth?

By John Arnst published 23 January 22

How long could you walk in a straight line? What if the path meandered?

A pale-throated sloth (Bradypus tridactylus)

Which animals have the longest arms?

By John Arnst published 18 January 22

Of all the living animals in the world, these are the ones with the longest arms, relative to body size.

Why does cannabis smell skunky?

By John Arnst published 8 January 22

Cannabis has long been called "skunky." Turns out, stinky sulfurous compounds are to blame.

When will the sun explode?

By John Arnst published 19 December 21

The sun is in its main sequence, but how do scientists know when our nearest star will begin to call it quits?

A reddish octopus shows off its many arms.

What's the difference between arms and tentacles?

By John Arnst published 29 November 21

Some sea creatures have arms, others have tentacles and a few have both. So, what's the difference between these appendages?

1
View Archive

Other versions of this page are available with specific content for the following regions: