Dolphins actually "name" each other using sounds, and a dolphin will respond to their own sound, even when it's made by a dolphin they don't know.

Malaria is thought to be responsible for the death of about half of all people who ever lived.

Cats can become addicted to tuna, refusing to eat virtually anything else.

British people say "Happy Christmas" because in the 19th century the word "merry" also meant "intoxicated."

When you donate blood in Sweden, you receive a "thank you" text. You also get a text when your blood is used to help someone.

In the UK it's impossible to be more than 70 miles away from the ocean.

IKEA is an acronym: "IK" are the founder's initials, "E" is for the farm he grew up on (Elmtaryd), and "A" is for Agunnaryd, his village.

The smell of chocolate increases theta brain waves, which triggers relaxation and feelings of contentedness.

There are actually 12 different types of rainbows.

An estimated 20% to 25% of people never actually get a hangover.

Gandhi was incredibly racist towards people from African countries. In fact, he even lobbied for segregation.

The first President born in the U.S., Martin Van Buren, spoke Dutch as his first language.

In some European countries, children are given gifts on December 6 rather than on December 25th, to celebrate the feast of St. Nicholas.

Bolivia has 37 official languages.

When Columbus "discovered" the Americas, the continent was already inhabited by 90 million people. In fact, the "new world" he discovered, it housed over a third of the world's population.

Viagra can keep cut flowers standing up straight for up to a week longer than normal.

Somehow, dogs tend to poop in alignment with the earth's magnetic field.

Pandas can poop up to 40 times a day.

In ancient Ireland, sucking a king's nipples was a gesture of submission and service to the crown..

Sometimes, seals can be spotted having sex with penguins.

Peanuts are one ingredient in dynamite.

There's a pill that can actually make your farts smell like chocolate.

Typically, men who cheat also have lower IQs.

A 99-year-old man divorced his 96-year-old wife after 77 years of marriage because he discovered she'd had a torrid love affair in the forties.

In the 1600s, men wore high heels. The only reason women started wearing them was to look more like men.

Some people wear adult diapers to Times Square on New Year's Eve, due to the lack of public toilets

Ethiopia has 13 months. Their current year is still 2006 and they celebrate New Years on September 11.

"Friendstalker" was one of the early names considered for Twitter.

A single astronaut's space suit costs $12 million.

13 of the 20 most polluted cities in world are located in India.