11 June 2013, 06:56 PM ET
Besides their grandeur, the Abu Simbel temples are notable because they were moved in 1964 to make way for the High Aswan Dam.
11 June 2013, 06:07 PM ET
Properties, sources and uses of the element tin.
11 June 2013, 05:07 PM ET
Properties, sources and uses of the element indium.
07 June 2013, 03:52 PM ET
Gondwana was an ancient supercontinent that broke up into Africa, South America, Australia, Antarctica, India and Arabia.
06 June 2013, 04:59 PM ET
In this easy experiment, students can extract a bit of their own DNA.
06 June 2013, 03:57 PM ET
DNA is a molecule that contains the instructions an organism needs to develop, live and reproduce.
05 June 2013, 06:22 PM ET
Atoms are the basic units of matter. They are made up of three particles: protons, neutrons and electrons.
04 June 2013, 07:20 PM ET
Friction is a force that resists the motion of one object against another.
04 June 2013, 04:49 PM ET
Since the late 1700s, the world's climate has been changing rapidly, mostly due to human causes.
03 June 2013, 07:10 PM ET
The process has caused controversy for more than 60 years.
03 June 2013, 05:37 PM ET
Gravity is the force of attraction that pulls two objects toward each other.
31 May 2013, 05:43 PM ET
Boudicca, queen of the Iceni tribe in England, led a revolt against the Roman Empire in A.D. 60.
31 May 2013, 04:02 PM ET
Faults are categorized into three general groups based on the sense of slip or movement.
31 May 2013, 02:35 PM ET
Properties, sources and uses of the element cadmium.
31 May 2013, 01:27 PM ET
Properties, sources and uses of the element silver.
30 May 2013, 06:15 PM ET
The American counterpart to Nessie is said to lurk in Lake Champlain, on the border between Vermont and New York.
30 May 2013, 05:23 PM ET
Many complex processes go on inside the human body every day.
30 May 2013, 01:27 PM ET
Properties, sources and uses of the element palladium.
30 May 2013, 01:09 PM ET
Properties, sources and uses of the element rhodium.
29 May 2013, 06:38 PM ET
Detox therapies and cleansing practices are based on a misunderstanding about how the human body works. They can also be harmful rather than healthful.
29 May 2013, 05:09 PM ET
Augmented reality is technology that not only interacts with you, but enhances your senses with images, information and audio.
29 May 2013, 04:07 PM ET
Properties, sources and uses of the element ruthenium.
28 May 2013, 08:22 PM ET
Younger adults are most likely to be diagnosed with Type I diabetes.
28 May 2013, 08:18 PM ET
Men between the ages of 15 and 34 are most commonly diagnosed.
28 May 2013, 08:10 PM ET
Inflamed tonsils and lymph nodes are a good indicator of having strep.
28 May 2013, 08:06 PM ET
Avoid cigarettes, aspirin and alcohol to help ulcers heal
28 May 2013, 07:56 PM ET
Treating spider bites and bee stings
28 May 2013, 07:49 PM ET
Avoiding tanning beds, wearing sun screen helps prevent skin cancer