The unicorn is the national animal of Scotland.

Yes, although it's a fabled creature, the national animal of Scotland is actually the mythical unicorn — chosen because of its association with dominance and chivalry as well as purity and innocence in Celtic mythology. BRB, moving to Scotland real quick.

The largest known living organism is an aspen grove.

Pando (Latin for "I spread out") is a group of genetically identical quaking aspens in Utah with an interconnected root system. It's an estimated 80,000 years old and takes up more than 100 acres.

M&M stands for Mars and Murrie.

Forrest Mars (son of the Mars Company founder) first spotted the British confection Smarties during the Spanish Civil War and noticed the candy shell prevented the chocolate from melting. He teamed up with Bruce Murrie (son of Hershey Chocolate's president) and the company later trademarked the "Melts in Your Mouth, Not in Your Hand" slogan.

Neil Armstrong didn't say "That's one small step for man."

The astronaut insists he actually stated, "That's one small step for a man, one giant leap for mankind." "That's the only way the statement makes any sense," Armstrong told biographer James Hansen. And for the record, no real astronaut ever uttered "Houston, we have a problem" — Tom Hanks only said that in the movie Apollo 13.

You can hear a blue whale's heartbeat from more than 2 miles away.

The world's largest animal's heart weighs about 400 pounds — approximately the size of a small piano.