If it's been a while since you've been to a fifth-grade science fair, then you probably don't know about oobleck. Oobleck, which was named after the magic substance in a famous Dr. Seuss book, is what ...

Above left: Trenton Central High School student Leeshua Pica traversed the pool. Below left: Jason Klugman (right), who coordinates the program, joined students in examining the Oobleck mixture.

Lots of people have demonstrated that, surprisingly, if you fill a pool with water and cornstarch you can run across it. Stop, and you sink. How that happens, though, has been something of a mystery ...