04 September 2014, 08:16 PM ET
Aerospace engineering deals with designing and building machines that fly. There are two main specialties: aeronautical engineering and astronautical engineering.
04 September 2014, 03:43 PM ET
Tooth sensitivity is a common dental problem that involves discomfort or pain in teeth when encountering certain substances and temperatures.
04 September 2014, 02:01 PM ET
Properties, sources and uses of the element palladium.
03 September 2014, 05:48 PM ET
Lyme disease is a bacterial infection caused by the bite of a tick. Early symptoms include a bull's-eye rash.
03 September 2014, 05:36 PM ET
Panic disorder is marked by sudden and repeated bouts of extreme fear that can last for several minutes or even longer. These episodes are referred to as panic attacks.
02 September 2014, 02:44 AM ET
Until recently, no one had ever seen the moving rocks at Racetrack Playa, but a new video shows the stones creeping across the desert.
29 August 2014, 07:18 PM ET
Dry, inflamed, itchy skin is a sign of the skin disorder eczema.
29 August 2014, 06:18 PM ET
Nail fungus, also medically known as onychomycosis, is a chronic fungal infection of the fingernails and/or toenails.
29 August 2014, 06:02 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.
28 August 2014, 11:59 PM ET
Civil engineering is the design and construction of public works, such as dams, bridges and other large infrastructure projects.
28 August 2014, 10:41 PM ET
Rosacea is a chronic disease characterized by cyclical flare-ups of redness and pimples around the face.
28 August 2014, 10:32 PM ET
Lobotomy is a neurosurgical operation that involves severing connections in the brain's prefrontal lobe.
28 August 2014, 10:23 PM ET
Gingivitis and periodontitis, two types of gum disease, are fairly common, but can be stopped or their symptoms lessened with effective care.
28 August 2014, 10:12 PM ET
People who experience social anxiety disorder are highly apprehensive in social settings, more so than the occasional case of nerves some may experience in everyday encounters.
27 August 2014, 08:12 PM ET
Post-traumatic stress disorder (PTSD) can occur after a person experiences a traumatic event, such military combat, a natural disaster, or a crisis such as 9/11.
27 August 2014, 04:38 PM ET
Chickenpox is a contagious disease characterized by many itchy, red bumps all over the body. Later in life, adults can develop a similar condition called shingles.
27 August 2014, 04:19 PM ET
People who experience generalized anxiety disorder (GAD) exhibit excessive anxiety and worry about multiple events or activities most days of the week.
26 August 2014, 10:48 PM ET
Electrical engineering is the branch of engineering that deals with the technology of electricity, including circuitry, power generation, machine control and communications.
26 August 2014, 08:48 PM ET
Autism spectrum disorder affects a person's ability to communicate, interact with others and behave appropriately in social situations.
26 August 2014, 06:06 PM ET
Dental plaque is a sticky, clear film of bacteria that forms on teeth. It causes dental problems, so plaque should be removed regularly.
26 August 2014, 02:26 AM ET
Mechanical engineers build things such as machines and tools that improve the conditions of life.
25 August 2014, 06:36 PM ET
Obsessive-compulsive disorder, or OCD, is a mental disorder characterized by persistent thoughts and ritualistic behaviors that interfere with daily life and relationships.
22 August 2014, 08:06 PM ET
Chronic lower-back pain is one of the most common complaints, but no single therapy has been proven to work.
21 August 2014, 08:40 PM ET
Engineering is the application of science and math to solve problems. It is a cornerstone of STEM education.
20 August 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.
19 August 2014, 09:05 PM ET
Fluid dynamics is the study of the movement of liquids and gases. Fluid dynamics applies to many fields, including astronomy, biology, engineering and geology.
18 August 2014, 04:48 PM ET
Botox can be used for spasmodic muscle contraction, overactive bladder and smoothing wrinkles, and has a fairly low rate of side effects.
15 August 2014, 10:42 PM ET
Vitamin B12 deficiency is a common problem. Supplements can treat a deficiency, but doctors recommended getting vitamin B12 from foods.
14 August 2014, 08:54 AM ET
Properties, sources and uses of the element gold.
12 August 2014, 03:31 PM ET
Poison ivy is a toxic plant that causes an itchy and sometimes painful rash in most people when they touch it.
11 August 2014, 09:00 PM ET
Anorexia nervosa involves an obsession with food and weight that can end up consuming a person's life.
11 August 2014, 06:24 PM ET
Asthma is a condition in which a person's airways are inflamed, which can cause coughing, wheezing and shortness of breath.