19 February 2013, 05:08 PM ET
A study by the Pew Research Center shows that the total number of Catholics in the world has tripled in the past century.
07 February 2013, 02:00 PM ET
This tiny squirrel-sized creature would later evolve into a diversity of mammal species including humans.
04 February 2013, 04:31 PM ET
Find out all about your stomach and how digestion works.
04 February 2013, 12:57 PM ET
Find out all about your lungs and how breathing works.
04 February 2013, 12:38 PM ET
All about your body's skeleton, the framework of bones that keeps you together.
23 December 2012, 05:40 PM ET
More than a thousand tornadoes strike the U.S. annually.
07 December 2012, 05:14 PM ET
Nearly every month of 2012 was warmer than in nearly every one of the years recorded since 1895.
20 November 2012, 02:13 PM ET
The dangers in introducing icy frozen turkeys to a pot of searing hot fry oil. Just part of our wall to wall Thanksgiving coverage.
13 November 2012, 09:57 AM ET
How Solar Eclipses Work: When the moon covers up the sun, skywatchers delight in the opportunity to see a rare spectacle.
05 November 2012, 04:00 PM ET
The deadliest hurricane in the period since 1851 hit Texas in 1900 and claimed 8,000 lives.
01 November 2012, 04:06 PM ET
Follow the path of hurricane Sandy as it casuses more than 150 deaths and billions of dollars in damages.
30 October 2012, 09:20 PM ET
A look inside the giant heat engine that keeps a hurricane alive.
29 October 2012, 01:32 PM ET
Hurricane Irene was a billion-dollar disaster, but it is dwarfed in terms of size by Hurricane Sandy.
22 October 2012, 01:07 PM ET
If you took the ice in all of Earth's mountain glaciers, it would make a cube with 34-mile-long sides.
16 October 2012, 12:35 PM ET
Learn about T. rex's massive teeth, bones, habitat and other dinosaur secrets.
05 October 2012, 05:01 PM ET
The daredevil's jump from 120,000 feet altitude requires the use of a space suit due to the low temperature and thin air.
26 September 2012, 05:44 PM ET
Scientists know the basics of what happens during a lightning strike. But the details remain hazy.
24 September 2012, 11:04 AM ET
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.
04 September 2012, 01:23 PM ET
A breakdown of the damage Isaac caused and the force it possessed.
13 August 2012, 10:28 AM ET
People are worth different amounts in different countries and situations.
09 August 2012, 06:06 PM ET
The human body can tolerate drastic departures from normal conditions. But what are its absolute limits?
03 August 2012, 10:12 AM ET
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.
01 August 2012, 03:41 PM ET
A study by the United Nations shows that U.S. life expectancy is years shorter than in many other countries.
26 July 2012, 05:26 PM ET
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.
25 July 2012, 01:19 PM ET
St. Louis, Missouri tops the list compiled by Men's Health magazine.
20 July 2012, 03:54 PM ET
One quarter of those polled by Gallup expressed confidence in newspapers.
13 July 2012, 04:09 PM ET
The first six months of 2012 were the hottest of any year on record.
13 July 2012, 02:55 PM ET
68 percent of foods sampled contained measurable pesticides even after washing and peeling.
05 July 2012, 02:51 PM ET
Researchers have observed a new, massive particle which they believe may be the Higgs boson.
03 July 2012, 01:36 PM ET
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.
30 June 2012, 12:17 PM ET
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.
25 June 2012, 12:34 PM ET
Wreckage from the earthquake and tsunami that devastated Japan in 2011 has traveled thousands of miles across the Pacific Ocean.