Summary:

• Laughing can help you burn calories.
• Sea otters hold hands when they sleep and cows have best friends.
• Trees can communicate with each other and the oldest “Your Momma” joke dates back 3,500 years.
• A Polish village is painted with flowers and male gentoo penguins propose to females.
• Being near someone you love makes you sleepy and there is a specific Japanese word for eating when you're not hungry.
• A group of flamingos is called a flamboyance and fake laughing can turn into real laughter.
• When you were born, you were the youngest person on Earth.
• Positive facts to celebrate the world include a decrease in people living in extreme poverty and an 80% reduction in child mortality rates.