Did you know that:

• 96% of the universe consists of unknown components. 23% is thought to consist of so-called “dark matter” which nobody understands. 73% is “dark energy” that is thought to have something to do with the universe expanding. So-called “ordinary matter” accounts for just 4% of the cosmos.
• There are 12,500 genes in the human genome, whose function remains completely unknown. Genes make up only 2% of the human genome. The rest of the material in the human gene remains a mystery.
• There are 85 billion cells in the human brain that are not neurons. Neurons make up less than half of all brain cells. The remaining cells, known as “glia” are now just beginning to be cataloged and researched.

Source: Discover, October 2010, pg. 15.