SPACE.com - When space
shuttle Discovery touched down in December 2006 after spending 13 days in space
traveling 5.3 million miles, it came to rest on four main landing gear and two
nose gear tires. Although not much larger than a truck tire, just one of
Discovery's main gear tires could carry three times the load of a Boeing 747
tire or the entire starting line-up of a NASCAR race 40 race cars all
hitting the pavement at 250 miles per hour.
LiveScience.com - In the first brain-wave study of any animal sleeping in the wild, scientists have discovered the three-toed sloth naps much less than commonly believed.