References
08 November 2013, 06:35 PM ET
A spinal cord injury is caused by damage to parts of the spine.
08 November 2013, 06:16 PM ET
The Coral Castle in Florida is an amazing feat of engineering.
07 November 2013, 06:04 PM ET
Homo erectus was an ancient human ancestor that lived roughly between 2 million and 100,000 years ago.
06 November 2013, 06:38 PM ET
Adderall is a prescription medication used to treat attention deficit hyperactivity disorder (ADHD) and narcolepsy.
01 November 2013, 06:49 PM ET
The blending of history and legend has created a distorted image of the Jamestown leader, especially with the story of his rescue by Pocahontas.
01 November 2013, 06:04 PM ET
Mount Elbrus is in the Caucasus Range, the mountains that separate Europe and Asia.
01 November 2013, 05:54 PM ET
A GMO is an organism that has had its DNA altered or modified in some way through genetic engineering.
01 November 2013, 05:47 PM ET
Type 2 diabetes is the most common form of diabetes, a condition characterized by high blood sugar levels.
31 October 2013, 09:10 AM ET
Though Dracula may seem like a singular creation, Stoker in fact drew inspiration from a real-life man with an equally disturbing taste for blood: Vlad III, Prince of Wallachia or — as he is better known — Vlad the Impaler (Vlad Tepes).
30 October 2013, 01:36 PM ET
Obsessive compulsive disorder, or OCD, is a mental disorder characterized by recurrent and persistent thoughts (obsessions) and ritualistic behaviors (compulsions) that interfere with a person's daily life and relationships.
30 October 2013, 12:47 AM ET
Voodoo is a sensationalized pop-culture caricature of voudon, an Afro-Caribbean religion originating in Haiti.
30 October 2013, 12:32 AM ET
The Sistine Chapel in the Vatican is renowned for its Renaissance art, especially the ceiling painted by Michelangelo.
29 October 2013, 01:15 AM ET
The Forbidden City in Beijing is a palace complex that was the home of 24 Chinese emperors for 500 years. It is now a museum.
29 October 2013, 12:50 AM ET
In these experiments, you will be making some observations that will help you gain a better understanding of weather.
28 October 2013, 05:41 PM ET
Properties, sources and uses of the element hassium.
23 October 2013, 06:55 PM ET
Properties, sources and uses of the element bohrium.
23 October 2013, 06:19 PM ET
In this experiment, you will build a simple barometer and measure changes in atmospheric pressure.
23 October 2013, 06:13 PM ET
In this experiment, you will determine the relative humidity using wet-bulb and dry-bulb thermometers. Such a device is called a psychrometer.
23 October 2013, 02:03 AM ET
In this experiment, you will see some of the other factors that cause clouds and precipitation.
23 October 2013, 01:59 AM ET
The evil eye is a specific type of magical curse. It is believed to cause harm, illness and even death.
22 October 2013, 06:41 PM ET
Properties, sources and uses of the element seaborgium.
22 October 2013, 12:42 PM ET
Coconut oil supplements and pills are touted for their health benefits, but do they really work? And is coconut oil safe to take? Here's a look at the evidence.
21 October 2013, 09:22 PM ET
Halloween has its roots in a pagan harvest festival, while different traditions were added on throughout the years.
21 October 2013, 07:44 PM ET
Mount McKinley, also known as Denali, rises more than 20,000 feet above sea level.
21 October 2013, 05:56 PM ET
Properties, sources and uses of the element dubnium.
16 October 2013, 05:39 PM ET
Properties, sources and uses of the element rutherfordium.
16 October 2013, 05:33 PM ET
Properties, sources and uses of the element lawrencium.
16 October 2013, 01:59 AM ET
Olduvai Gorge is a rich archaeological site in Tanzania where evidence of the first humans has been found.
14 October 2013, 10:54 PM ET
The power of the sun has been harnessed to run everything from toys to planes to racecars.
14 October 2013, 06:55 PM ET
Winners of the Nobel Prize in economics, including Paul Krugman, Daniel Kahneman and Milton Friedman.
14 October 2013, 06:23 PM ET
Properties, sources and uses of the element nobelium.
11 October 2013, 06:25 PM ET
James Watson was a pioneer molecular biologist who, along with two other scientists, was awarded the Nobel Prize for discovering the double helix structure of the DNA molecule.