biology - Trivia, Quizzes, and Brain Teasers | Mental Floss

On a Limb: How an Octopus Regrows Its Arms

Octopuses never have to say a farewell to arms for long.

On a Limb: How an Octopus Regrows Its Arms

17 Noisy Facts About 17-Year Cicadas

The cicadas are coming!!!

17 Noisy Facts About 17-Year Cicadas

Here’s Why You Shouldn’t Recycle Your Giant CVS Receipts

cyano66/iStock via Getty Images

Here’s Why You Shouldn’t Recycle Your Giant CVS Receipts

11 Animals You Wouldn't Expect to Glow

J. Martin and E. Olson, Northland College; from Olson et al. 2021, Scientific Reports

11 Animals You Wouldn't Expect to Glow

Why Does Our Hair Grow Darker as We Get Older?

Get ready to be a brunette, kid.

8 Historical Methods of Detecting Pregnancy

olia danilevich, Pexels

Remembering Sudan, the World's Last Male Northern White Rhino

Tony Karumba, AFP/Getty Images

The Great Tryptophan Lie: Eating Turkey Does Not Make You Tired

H. Armstrong Roberts/iStock via Getty Images

Scientists Come Closer to Understanding COVID-19 'Cytokine Storms'

Science is closer to understanding what prompts severe COVID-19 illness.

Why Do Some People Have Dimples?

There's a good chance his parents have dimples, too.

Tasmanian Devils Have Been Reintroduced to Australia’s Mainland After 3000 Years

Jgritz~commonswiki, Wikimedia Commons // CC BY-SA 2.5

100 Fascinating Facts About Earth

The best Spaceball.

62-Year-Old Ball Python at St. Louis Zoo Lays Eggs After Decades of Isolation

David Kenny/iStock via Getty Images

Craving Nature? Your Gut Microbiome Might Be Responsible

These hikers's gut microbes are running the show.

A Stroke of Genius: New Research Shows That Sperm Don’t Slither—They Corkscrew

Sperm have been duping us for nearly 350 years.

Beavers on Devon's River Otter to Become England's First Permanent Population in Centuries

Ray Scott, Wikimedia Commons // CC BY SA 3.0