The Grand Canyon is one of the Seven Wonders of the World, visited by millions of admirers each year. So, naturally, you'd think that all of its rock layers had been studied and named. But you'd be wrong.

Last week, readers of the Sun got a treat in being introduced to Adugna “Adu” Siweya, one of the Las Vegas Valley’s outstanding college graduates this spring. Inspirational stories Siweya's make college graduation season a special time in Las Vegas, an annual reminder of the remarkable minds in our community, and the commitment of students to academic achievement.

Dr. Ming-Wei Wu drives his son and daughter to the University of Nevada, Las Vegas, and escorts them to and from classes.

Dedicating years of schooling to pursue higher math degrees may help solve certain problems, but does it make any difference for something as simple as cutting your grass? To find out, I spent the week discussing the mathematics of lawn mowing with my colleagues at the University of Nevada, Las Vegas.