Every fact, in one place.

Your Brain's 150 Friend Limit

The average human can only maintain stable social relationships with about 150 people at a time.

The Secret to Living Past 85?

Studies show that optimists are 50-70% more likely to live to the age of 85 or older.

Van Gogh Only Sold One Painting

During his lifetime, Vincent van Gogh sold only one painting: 'The Red Vineyard'.

The Town Immune to Heart Disease

The 'Roseto Effect' showed a town had virtually no heart disease due to its incredibly strong community bonds.

Kindness is a Painkiller?! #8457

Performing acts of kindness produces endorphins, the brain's natural painkillers.

Roosevelt's Boxing Secret #3016

Theodore Roosevelt became blind in his left eye from a boxing injury he sustained while in the White House.

Your Brain on Kindness

Just watching an act of selflessness releases the 'love hormone', oxytocin, in your brain.

Australia Lost a War to Birds

In 1932, the Australian military waged a 'war' against emus with machine guns and were ultimately defeated by the fast-moving birds.

The Octopus's Genetic Superpower

Octopuses can edit their own RNA to rapidly adapt to changing ocean temperatures.

This Accident Changed Medicine Forever

Penicillin was discovered completely by accident when Alexander Fleming returned from vacation to find mold had contaminated, and killed, bacteria in a petri dish.

A Useless Fact

Slugs have four noses.

The Secret at Lady Liberty's Feet

The broken shackle and chain at the Statue of Liberty's feet symbolize freedom from oppression.

Australia Lost a War to Birds! #4198

In 1932, the Australian military waged a 'war' against emus and were ultimately defeated.

The Selfless Secret to a Longer Life

Engaging in selfless acts is linked to lower blood pressure and a longer lifespan.

The Mindset for a Longer Life

Studies suggest that optimists may live 11-15% longer than their pessimistic counterparts.

A Useless Fact

A “2 by 4" is really 1 1/2 by 3 1/2.

She Sailed the World in Disguise #3956

The first woman to circumnavigate the globe, Jeanne Baret, did so in the 1760s disguised as a man.

Does Your Soul Weigh 21 Grams?

A 1907 experiment controversially claimed the human soul weighs exactly 21 grams.

A Cat Was Mayor for 20 Years!

A cat named Stubbs was the honorary mayor of Talkeetna, Alaska, for two decades.

Why Hard Work Beats Talent

The concept of 'grit,' defined as perseverance and passion for long-term goals, is a stronger predictor of success than IQ.

When Were Teenagers Invented? #351

The concept of the 'teenager' as a distinct social group didn't exist until the 1940s.

A Useless Fact

One in eight million people has progeria, a disease that causes people to grow faster than they age.

Optimism: Your Secret Superpower

Studies show that optimism can physically strengthen your immune system, making you more resistant to illness.

A Useless Fact

The most popular first name in the world is Muhammad.