References
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.
11 October 2013, 04:12 PM ET
Properties, sources and uses of the element mendelevium.
11 October 2013, 11:21 AM ET
The winners of the Nobel Prize in Literature, including Toni Morrison, Gabriel Garcia Marquez and John Steinbeck.
11 October 2013, 09:11 AM ET
Here's a look at all Nobel Peace Prize recipients, including Barack Obama, Mother Teresa, Nelson Mandela and Martin Luther King Jr.
10 October 2013, 06:18 PM ET
The Cenozoic Era began about 65 million years ago and continues into the present.
10 October 2013, 05:43 PM ET
Properties, sources and uses of the element fermium.
10 October 2013, 05:37 PM ET
Crystal healing is an alternative medicine technique that employs crystals and other stones as conduits for natural healing energy.
09 October 2013, 05:51 PM ET
The Pleistocene Epoch began about 1.8 million years ago and lasted until about 11,700 years ago.
09 October 2013, 05:46 PM ET
Laminated object manufacturing is a method of 3D printing in which layers of plastic or paper are fused together.
09 October 2013, 05:43 PM ET
Ulcerative colitis is a type of inflammatory bowel disease that causes inflammation and sores, or ulcers, in the lining of the large intestine or colon.
09 October 2013, 05:18 PM ET
Properties, sources and uses of the element einsteinium.
09 October 2013, 11:06 AM ET
A list of the winners of the Nobel Prize in Chemistry, including Marie Curie, Roger Kornberg and Otto Hahn.
08 October 2013, 10:15 PM ET
The seasonal flu shot is a yearly vaccine administered to protect against the flu, or influenza. It is recommended for everyone ages 6 months and older.
08 October 2013, 07:16 PM ET
Celiac disease is an autoimmune digestive disease that affects at least 1 in 133 Americans. People with celiac disease cannot eat gluten.
08 October 2013, 07:06 PM ET
Roman emperor Nero is one of the most infamous men who ever lived.
08 October 2013, 06:58 PM ET
Coral reefs are large underwater structures composed of the skeletons of coral, which are marine invertebrate animals.
08 October 2013, 06:43 PM ET
Reiki is a therapy often described as palm healing or hands-on-body healing in which a practitioner places hands lightly on or over a patient's body to treat or cure various ailments.
08 October 2013, 05:43 PM ET
Properties, sources and uses of the element californium.