Now we know why Howie Spleen is the way he is...

Grand Forks Herald: Scientists link gene to brain's evolution
One of the most intriguing mysteries of biology is why humans are the only species with a brain smart enough to ponder their own existence. Researchers at the University of California, Santa Cruz, (Go Banana Slugs! - F.G.) believe they have discovered a possible answer: a gene that has undergone powerful mutational changes in the last 5 million years that may partly account for the accelerated evolution of the human brain...

Haussler's group found a gene called HAR1 that appears to exist in the brains of all animals. For most animals, from chickens to chimpanzees, the gene underwent little change for hundreds of millions of years, suggesting it performs a vital function.

Poor Howie. They're going to have to put a diaper and roller skates on that boy...