Join Andy for a light-hearted look at the latest discoveries in science.

This week in science we discovered that when babies crawl, their movement, especially on carpeted surfaces, kicks up high levels of potentially dangerous bio-grime (video credit: Purdue University). New research revealed that institutional rankings have little to no relationship to student engagement. (video credit: Binghamton University, State University of New York).And scientists have discovered that cancer cells are sensitive to circadian rhythms and treatment may be able to slow the growth of cells by activating their biological clocks (video credit: Salk Institute).