The daredevil's jump from 120,000 feet altitude requires the use of a space suit due to the low temperature and thin air.
A new NASA image based on satellite data shows that the extent of Arctic sea ice in September 2012 has hit a new record minimum, compared with the average minimum extent for the past 30 years.
The human body can tolerate drastic departures from normal conditions. But what are its absolute limits?
A scientist says that the United States experiences cycles of violence that peak every 50 years. If so, the next peak of violence will occur in 2020.
A study by the United Nations shows that U.S. life expectancy is years shorter than in many other countries.
More than half of the continental United States this summer is experiencing moderate to extreme drought, according to reports released by the National Weather Service.
Sixteen countries rank as the Worst of the Worst in personal freedoms, with 23% of the world population having no say in how they are governed.
The 20th century saw big strides in defeating many illnesses, but heart disease and cancer are still the major causes of death in the United States.
Wreckage from the earthquake and tsunami that devastated Japan in 2011 has traveled thousands of miles across the Pacific Ocean.
TV sets are going dark as viewers turn to their computers and tablets to satisfy their hunger for entertainment.