Shark is the clear winner on price. Its vacuums range from $100 to $500 and offer impressive features and performance for the cost. Dyson vacuums have undeniable cachet—but it comes at a premium.

Thousands of U.S. schools have their students race the clock to stack cups in gym class. Why? A former circus clown from Colorado named Bob Fox holds the key. Here & Now 's Peter O'Dowd uncovers the ...