References
24 October 2014, 04:10 PM ET
The fictional Dracula was loosely based on a real person with an equally disturbing taste for blood: Vlad III, Prince of Wallachia or — as he is better known — Vlad the Impaler (Vlad Tepes).
23 October 2014, 08:15 PM ET
They have a fierce bark and bite!
23 October 2014, 08:00 PM ET
Avocados are a versatile fruit that are packed with nutrients and are a great way to add healthy fat to your diet.
22 October 2014, 08:35 PM ET
Sweet potatoes are a surprisingly nutritious vegetable. They are especially high in vitamins A, C, E, and B6, fiber and manganese.
22 October 2014, 08:34 PM ET
Vampire fans have a rich vein of lore to draw from.
22 October 2014, 08:25 PM ET
There are only two species of these chomping machines, find out where they are!
22 October 2014, 08:22 PM ET
Halloween has its roots in a pagan harvest festival, while different traditions were added on throughout the years.
22 October 2014, 08:15 PM ET
Properties, uses and sources of the element titanium.
22 October 2014, 12:59 AM ET
Environmental engineering is the branch of engineering that is concerned with protecting people from the effects of adverse environmental effects.
21 October 2014, 09:06 PM ET
Their horns are made of the same stuff as human fingernails!
21 October 2014, 07:33 PM ET
Ghost hunters like to believe that ghosts exist, but science and logic are ghost busters.
21 October 2014, 07:33 PM ET
Premenstrual syndrome (PMS) refers to a variety of symptoms that women experience in the second half of a menstrual cycle.
21 October 2014, 07:03 PM ET
Properties, sources and uses of the element krypton.
17 October 2014, 07:09 PM ET
They have a nasty bite!
17 October 2014, 06:06 PM ET
Asparagus contains a stimulating blend of nutrients, making this member of the lily family a fantastic food for your health.
17 October 2014, 05:51 PM ET
A kidney stone is a hard mass that forms in the kidneys from minerals in the urine, and if large enough, can cause serve pain.
17 October 2014, 04:18 PM ET
Properties, sources and uses of the element neon.
17 October 2014, 03:49 PM ET
One in five Americans develops skin cancer over their lifetime, making it the most common form of cancer. Fortunately it is also one of the most preventable, because sun exposure is a major factor in its growth.
17 October 2014, 03:25 PM ET
They have black skin under their striped hair!
17 October 2014, 03:16 AM ET
Computer engineering is the branch of engineering that integrates electronic engineering with computer sciences.
16 October 2014, 09:50 PM ET
They're the fastest animal on land and they can turn around in midair!
16 October 2014, 09:13 PM ET
Onions have layers and layers of health benefits. Some of the nutrients in onions may help promote heart health, reduce inflammation, and reduce the risk of cancer.
16 October 2014, 08:08 PM ET
The Integumentary System consists of the skin, hair and nails.
16 October 2014, 12:38 AM ET
Ebola virus disease (EVD) is a rare and often-fatal infection caused by one of the five strains of the Ebola virus.
15 October 2014, 08:32 PM ET
Spiny on the outside, sweet on the inside, pineapples are one fantastic fruit.
15 October 2014, 08:00 PM ET
Kangaroos are marsupials native to Australia. Their babies are called joeys and they live in groups called mobs.
14 October 2014, 07:17 PM ET
It may take more than a month for symptoms of head lice to show.
13 October 2014, 08:13 PM ET
Whooping cough, also known as pertussis, is a bacterial infection of the respiratory tract that causes severe coughing. The disease is especially serious for babies.
13 October 2014, 06:10 PM ET
Winners of the Nobel Prize in economics, including Paul Krugman, Daniel Kahneman and Milton Friedman.
13 October 2014, 02:47 PM ET
Use this body mass index (BMI) calculator to estimate your body fat and to see if you’re considered underweight, normal, overweight or obese.
13 October 2014, 02:35 PM ET
A spinal cord injury is caused by damage to parts of the spine.
11 October 2014, 05:38 PM ET
Bladder cancer is a cancer of the lining of the bladder.