20 August 2015, 09:39 PM ET
El Niño is a climate cycle in the Pacific Ocean with a global impact on weather patterns.
20 August 2015, 02:28 AM ET
Vitamin B6 is important to maintaining a healthy body and developing a healthy brain.
18 August 2015, 07:32 PM ET
Vitamin K is known as the “blood-clotting vitamin” for its important role in healing wounds.
12 August 2015, 01:17 AM ET
Vitamin C, also called ascorbic acid, is important to many functions in the body. Many fruits and vegetables are good sources of vitamin C. Research is mixed on whether it really helps treat the common cold.
12 August 2015, 12:47 AM ET
Niacin is an essential vitamin that helps the digestive system, skin and nervous system to function.
01 August 2015, 02:22 AM ET
Vitamin B1, also called thiamine, is a B complex vitamin. It is found in many foods and is vitally important to keeping a body operating properly.
31 July 2015, 06:42 PM ET
Photosynthesis is the process used by plants, algae and certain bacteria to harness energy from sunlight into chemical energy.
31 July 2015, 12:30 AM ET
An ectopic pregnancy occurs when a fertilized egg implants outside of the uterus or not within the uterine cavity.
30 July 2015, 01:57 AM ET
Vitamin B7, also called biotin, is a vital part of a healthy metabolism and creating important enzymes.
30 July 2015, 01:40 AM ET
Almond milk is a drink made from water and ground almonds. It is a popular plant-based alternative to cow’s milk.
28 July 2015, 10:04 PM ET
Homo floresiensis, a diminutive hominin dubbed the hobbit, lived about 17,000 years ago on a remote Indonesian island.
28 July 2015, 09:22 PM ET
Magnetism is the phenomenon that arises from the force between objects that produce fields that attract or repel other objects.
28 July 2015, 02:57 AM ET
Folic acid is a synthetic form of folate, also known as vitamin B9. It is commonly prescribed for pregnant women.
27 July 2015, 08:30 PM ET
Properties, sources and uses of the element tin.
24 July 2015, 01:44 AM ET
Static electricity results from an imbalance between negative and positive charges in objects.
23 July 2015, 02:22 AM ET
Bacteria are microscopic single-celled organisms that can be helpful, such as those that live in our guts, or harmful, such as flesh-eating bacteria.
23 July 2015, 02:10 AM ET
Vitamin B5, also called pantothenic acid and pantothenate, is vital to living a healthy life. Like all B vitamins, it helps the body turn food into energy.
22 July 2015, 02:23 AM ET
Almonds, the most popular nut in the United States, is full of nutrients and may promote heart healthiness.
20 July 2015, 10:52 PM ET
Tramadol is a prescription medication used to treat pain.
13 July 2015, 10:39 PM ET
Vitamin E is vital to keeping healthy and preventing various diseases. A healthy diet should provide all that you need. Supplements, in fact, can be dangerous.
13 July 2015, 10:30 AM ET
Properties, sources and uses of the element plutonium.
09 July 2015, 09:46 PM ET
Uranium is a naturally radioactive element. It powers nuclear reactors and atomic bombs.
09 July 2015, 09:34 PM ET
The lymphatic system helps rid the body of toxins.
01 July 2015, 05:10 AM ET
Preeclampsia is a serious complication that can develop during pregnancy. It is characterized by high blood pressure and high levels of protein in urine.
30 June 2015, 11:14 PM ET
Euler's Identity is a remarkable equation that comprises the five most important mathematical constants.
30 June 2015, 10:17 PM ET
Potassium is a highly reactive metal that explodes when it comes in contact with water. But it is also an essential nutrient.
26 June 2015, 11:15 PM ET
Insulin resistance is a condition where the body's cells don't properly respond to the hormone insulin, which tells cells to take in blood sugar and use it for fuel.
26 June 2015, 11:12 PM ET
Testicular cancer — cancer that is found in the testicles — is a rare disease most often diagnosed in men between 15 and 34 years old.
24 June 2015, 12:57 AM ET
Popeye the Sailor Man's favorite veggie is dense in vitamins and minerals, low in calories and may help with several health conditions.
23 June 2015, 01:07 AM ET
Topology is a branch of mathematics that describes mathematical spaces, in particular the properties that stem from a space’s shape.
22 June 2015, 09:55 PM ET
Homo erectus was an ancient human ancestor that lived roughly between 2 million and 100,000 years ago.
19 June 2015, 10:00 PM ET
Temperatures rise and the livin' is easy.