How many languages are there in the world?
There are approximately 6,900 distinct languages in existence today, though there may be languages spoken in remote areas that we have yet to discover. No matter how many new languages we find, though, this number will be much lower in 100 years.

How many gallons of water does an average household use per day?
If your family's water usage is more than that amount, you need to look at your water-use habits. An average usage is 50 gallons/day/person. An average usage for a family of four for a 30-day billing period would be 6,000 gallons or 8 ccf. Teens tend to stay in the shower longer.

Who invented the kazoo?
It was on such an instrument that the kazoo, invented in the 19th century by an African American named Alabama Vest in Macon, Georgia, United States, is based. The first kazoo was manufactured to Vest's specifications by Thaddeus Von Clegg, a German clockmaker in Macon.