Firefighters Called to Rescue Puppies—But What They Found Was Even Stranger

The More You Know

• The sun and moon appear to be the same size in the sky because of an astonishing coincidence: the moon is 400 times smaller but 400 times closer.
• Before mating, the female giraffe will first urinate in the male's mouth.
• About 7% of all humans who have ever lived are alive today.
• Jellyfish can sting even when they're dead.