Balloon puncture trick; U.S. Navy survival training; British Royal Tournament; baseball for blind National Beep Baseball Association; handicapped man competes in Paralympic Games; Stephen Hawking; soil samples from Mars; a volcanic eruption on a moon of Jupiter; the Moon landing; astronauts training for zero gravity; Space Flight Operations Facility; a rooftop garden in New York City; a machine that picks apples; using corn smut in Mexico; how a grammatical error cost $2 million.