27 December 2013, 05:21 PM ET
Blood pressure is one of the vital signs that doctors measure to assess general health.
26 December 2013, 06:24 PM ET
Facts about ibuprofen, including side effects and the risks for dogs and pregnant women.
26 December 2013, 06:19 PM ET
Yoga originated in India but has spread in the Western world as an exercise practice that links mind, body and breath.
24 December 2013, 12:32 AM ET
Lobotomy is a neurosurgical operation that involves severing connections in the brain's prefrontal lobe.
24 December 2013, 12:24 AM ET
Oxytocin is a hormone that plays a large role in social interactions and social bonding.
20 December 2013, 07:41 PM ET
The Byzantine Empire, also called Byzantium, was the eastern half of the Roman Empire that continued on after the western half of the empire collapsed.
20 December 2013, 07:17 PM ET
The pulse rate measures the rate at which blood pressure increases throughout the body. There are several places on the body where you can find your pulse.
20 December 2013, 06:34 PM ET
Ayurveda is an ancient health care tradition practiced in India.
18 December 2013, 11:19 PM ET
Heart rate, also known as pulse rate, is the number of times your heart beats per minute. A normal heart rate depends on the individual as well as a variety of factors.
18 December 2013, 10:03 PM ET
Bursting the bubble on claims that people have burst into flame.
18 December 2013, 02:18 PM ET
Melatonin supplements are often recommended for sleep problems, but the hormone has other effects on health too. Here's a look at what science says about the safety and effectiveness and effectiveness of melatonin supplements.
18 December 2013, 01:08 AM ET
Metformin is a prescription drug used primarily in the treatment of type II diabetes.
16 December 2013, 06:09 PM ET
Osteoarthritis, the most common form of arthritis, occurs when cartilage between the joints wears down over time.
16 December 2013, 06:01 PM ET
Catherine the Great was Russia's longest-ruling female leader.
13 December 2013, 07:13 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 December 2013, 07:06 PM ET
The North Pole, the northernmost point on Earth, has inspired human imagination, scientific exploration and political conflict for decades.
12 December 2013, 05:22 PM ET
A smart grid is an electrical grid that is integrated with a computerized, two-way communication network.
10 December 2013, 11:12 PM ET
Is Christmas too slow in coming? Why not liven things up with a little fun and interesting science? These activities are sure to while away some of those holiday doldrums.
10 December 2013, 09:37 PM ET
Ouija boards are supposedly used to communicate with the dead. But do they really work?
09 December 2013, 10:22 PM ET
In this holiday science experiment, find out what dyes were used to make your favorite colorful candies.
06 December 2013, 09:03 PM ET
The Maya civilization stretched throughout Central America and reached its peak during the first millennium A.D.
06 December 2013, 08:51 PM ET
George Washington Carver was a prominent American scientist and inventor who developed hundreds of products using peanuts and other plants.
06 December 2013, 12:15 PM ET
Turmeric is a spice with a long history of use in cooking and religious rituals, and evidence suggests it may hold health benefits as well.
06 December 2013, 12:49 AM ET
Does adding sugar, aspiring or vinegar to the water keep your Christmas tree fresher longer? Try this experiment to find out.
04 December 2013, 09:36 PM ET
The Andean peak is also the highest in the Western and Southern hemispheres.
02 December 2013, 07:00 PM ET
Using laundry powder, create beautiful crystal snowflakes you can hang on your Christmas tree.
27 November 2013, 11:12 PM ET
The Brazilian wandering spider is one of the most venomous spiders on Earth.
27 November 2013, 11:08 PM ET
Stories about children raised by wild animals are common in myth and folklore. Fortunately, true tales of feral child have proven to be hoaxes.
26 November 2013, 11:41 PM ET
Garden spiders are the creators of the delicate, circular, spoked webs that are the classic image of a spider web.
26 November 2013, 06:05 PM ET
Spectroscopes split light into different wavelengths. You can use them to determine the chemical composition of objects such as stars and elements.
25 November 2013, 06:19 PM ET
Cyclobenzaprine is a prescription medication that is used as a muscle relaxant. It is intended for short-term use, and should be used with other medications.
25 November 2013, 05:24 PM ET
Funnel-web spiders build funnels out of their webs. Some of these spiders are among the most venomous in the world.