Numbers

By Melissa August, Harriet Barovick, Sean Gregory, Janice M. Horowitz, Benjamin Nugent, David Robinson and Rebecca Winters

$200 million Amount Amtrak has requested in federal loan guarantees to avert a shutdown

$1.8 billion Amount United Airlines has requested in federal loan guarantees to ensure its survival

54% Percentage of Americans who say they return from their vacations feeling fatigued

26% Those who lose sleep because of an increased pre-vacation workload

$10.4 million Amount 7-ft. 5-in. Chinese basketball star Yao Ming, drafted by the Houston Rockets, will make for his first three years in the NBA

$5 million Estimated part of Yao's salary that will go to the Chinese government

94% Percentage of parents who spank their kids before age 4, according to a recent study

10 Number of negative behaviors exhibited by spanked kids, including aggression, delinquency and mental-health problems, according to the study

Sources: Reuters, Los Angeles Times, AP, Gallup, Psychological Bulletin