References
20 May 2014, 12:42 AM ET
Druids were revered in ancient Britain. Much about them is a mystery, but we know this: They did not build Stonehenge.
16 May 2014, 10:35 PM ET
A woman can deliver her baby either by vaginal birth or a C-section. Both delivery methods have advantages and disadvantages.
15 May 2014, 09:18 PM ET
Our modern Western calendar is almost entirely a Roman invention, but it has changed significantly throughout history.
13 May 2014, 08:34 PM ET
There is also no definitive way to predict a baby's sex. Even common tests, such as ultrasound and amniocentesis, are not completely accurate.
12 May 2014, 08:27 PM ET
A midwife is a trained professional who aids and supports women in their pregnancies. Many women with low-risk pregnancies prefer using a midwife.
09 May 2014, 07:54 PM ET
The use of "anno domini" and "before Christ" to mark time began in the early days of Christianity, when clerics needed to know when Easter would fall.
09 May 2014, 07:27 PM ET
The first atomic bombs were detonated during World War II.
07 May 2014, 07:23 PM ET
The Romans named the days of the week after their gods. The Germanic people adapted the Roman system and gave us the English names of the days.
07 May 2014, 01:19 AM ET
Prostate cancer is one of the most common forms of cancer in men: Almost 240,000 men in the United States are diagnosed with prostate cancer each year.
07 May 2014, 01:14 AM ET
Claims that some twins share a telepathic bond are anecdotal at best.
07 May 2014, 01:08 AM ET
Here's how to engineer a mosquito-free environment, and what to do if these annoying insects do bite.
03 May 2014, 01:30 AM ET
Seasonal allergies can be treated with OTC medicines, prescription drugs and natural remedies. Learn which medications address which symptoms.
02 May 2014, 08:37 AM ET
As the search for Malaysia Airlines Flight 370 continues, here are some facts about the passengers, crew, aircraft and airline.
01 May 2014, 11:27 PM ET
To the ancient Greeks, a barbarian was someone who didn't speak Greek. Over time, the word has taken on new meanings.
01 May 2014, 10:44 PM ET
The Egyptians started dividing the day into 24 units, a practice that continues to influence how we tell time.
01 May 2014, 09:23 PM ET
The San Andreas Fault triggered some of the biggest earthquakes in United States history.
01 May 2014, 01:16 AM ET
The desire and need to cool the air goes back millennia. Air conditioning began in ancient Egypt and was perfected in the 20th century.
30 April 2014, 04:04 PM ET
A convergent series is a mathematical series in which the sequence of partial sums converges to a finite number. A divergent series is just the opposite — the sums do not meet a finite limit.
30 April 2014, 02:29 AM ET
The Hope Diamond is one of the most spectacular gems in the world, but some people believe ownership comes at a cost.
25 April 2014, 05:41 PM ET
The Holocaust refers to the Nazi-sponsored murder of the Jewish population of Europe — and other groups — during World War II. The International Holocaust Remembrance Day is April 28.
24 April 2014, 05:35 PM ET
Whey protein is a supplement often used for building muscle. But is it safe to use, and does it work? Live Science looked at the science behind taking whey protein.
19 April 2014, 01:18 AM ET
Dividing the day into hours, minutes and seconds is a recent practice with thousands of years of science and tradition behind it.
17 April 2014, 03:36 AM ET
Pregnancy lasts about 40 weeks and is divided into three stages, or trimesters, each with unique symptoms and changes in the mother's body and in fetal development.
15 April 2014, 07:51 PM ET
The liver is a vital organ that supports nearly every other organ to some capacity. You cannot live without a healthy liver.
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.
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.