References
15 April 2014, 01:16 AM ET
Swollen veins that bump out from beneath the skin are called varicose veins or spider veins. There are several causes, as well as several methods of treatment.
15 April 2014, 01:03 AM ET
Anthropology is the study of humans, early hominids and primates. Anthropologists study human language, culture and societies.
10 April 2014, 09:46 PM ET
The bicycle has a complicated past fraught with controversy and misinformation.
10 April 2014, 07:57 PM ET
For years, people have reported sudden showers of animals falling from the sky. What's really going on?
09 April 2014, 11:28 PM ET
A Cesarean section is a type of surgery used to deliver a baby through an incision in the mother's abdomen.
09 April 2014, 11:02 PM ET
The spleen is an important organ for keeping bodily fluids balanced. It is possible to live without it, but removal of the spleen has serious consequences.
09 April 2014, 06:20 PM ET
Apples are low in calories and high in fiber, have only a trace of sodium and no fat. An apple a day may really keep the doctor away.
07 April 2014, 06:35 PM ET
The Celts were an ancient people who spread across continental Europe, and only recently became associated with the British Isles.
07 April 2014, 05:10 PM ET
A miscarriage is the loss of pregnancy before the 20-week mark in the pregnancy. The medical term for a miscarriage is spontaneous abortion.
07 April 2014, 05:04 PM ET
The pancreas helps regulate blood sugar levels. It is also an important aid in digestion.
04 April 2014, 02:37 AM ET
NATO is an alliance of nations that have pledged to respond collectively to an attack against any other member.
04 April 2014, 02:26 AM ET
Suicide rates have been rising steadily, but awareness of the warning signs can help prevent suicide.
02 April 2014, 04:13 AM ET
Every labor story is different, but there are definitely signs that can let you know if you are in the early stages of labor.
02 April 2014, 03:05 AM ET
Your body goes through a number of changes in the earliest stages of pregnancy. If you are pregnant, here's what has happened so far.
02 April 2014, 02:55 AM ET
Biology is the science of life. Biologists study the structure, function, growth, origin, evolution and distribution of living organisms.
01 April 2014, 03:09 AM ET
The Romani ethnic group, often called Gypsies, have unique customs, spiritual beliefs and cultural traditions.
29 March 2014, 01:33 AM ET
Jane Goodall is a primatologist most known for her long-term study of wild chimpanzees in Tanzania.
28 March 2014, 02:51 AM ET
Archaeology is fundamentally the study of humanity and its past.
27 March 2014, 02:33 AM ET
Did you know that Easter eggs are wonderful materials for fun science projects? Try some of these eggs-periments and find out how interesting your eggs can be!
27 March 2014, 02:28 AM ET
When you think you may be pregnant, it's time to check with a pregnancy test. It's important to understand how they work, how to read the results and which one is the most accurate.
27 March 2014, 02:19 AM ET
Attila was king of the Huns, and a relentless warrior who attacked both the Western and Eastern Roman Empires.
26 March 2014, 02:43 AM ET
Tooth sensitivity is a common dental problem that involves discomfort or pain in teeth when encountering certain substances and temperatures.
26 March 2014, 02:34 AM ET
Italian culture, steeped in the arts, architecture, music and food, has flourished for centuries. Here is a brief overview of Italian customs and traditions.
26 March 2014, 02:27 AM ET
21 March 2014, 11:21 PM ET
Ever since King Tutankhamun's tomb was discovered, stories circulated that those who dared violate his final resting place faced a terrible curse. It was a useful ruse to scare off grave robbers.
21 March 2014, 11:02 PM ET
Learn about keeping your kids’ teeth healthy and strong from infancy on and setting them up for a lifetime of healthy teeth and good dental hygiene practices.
21 March 2014, 08:29 PM ET
Sure, your clock is keeping time — but to what?
20 March 2014, 11:23 PM ET
Brightly colored materials in your kitchen can be used to make natural dyes for Easter eggs.
20 March 2014, 02:51 AM ET
Cavities, also referred to tooth decay or caries, are holes in the teeth. Cavities are the second-most common health disorder in the United States.
20 March 2014, 02:48 AM ET
Botox may be known for smoothing celebrity wrinkles, but I also has a place in migraine treatment and reducing sweating, though it can also have side effects.
20 March 2014, 02:35 AM ET
For a woman trying to get pregnant, there are a number of ways to increase the chances and make it more likely that she will conceive a child.
20 March 2014, 02:30 AM ET
There are several things a man can do to increase the chances that he will get a woman pregnant.