Light-emitting diodes, more commonly called LEDs, are used in a variety of ways, including in automotive and home lighting, video displays and traffic signals. LEDs are energy efficient and can last up to three years.

Antiseptics and disinfectants are the basic tools of cleaning and sanitizing, yet the difference between the two substances is unclear. Knowing the difference between antiseptics and disinfectants and how each works to sterilize wounds or surfaces can help you select the most appropriate product for your needs.

Honey has been used for thousands of years in medicine and as a skin treatment. The "Journal of the Royal Society of Medicine" reports that honey was used extensively by the ancient Greeks, Romans and Egyptians for wounds and disease and has proven value in treating surgical and burn wounds.

According to the Los Alamos National Labs, hydrogen is the most abundant element in the universe. In fact, hydrogen makes up an estimated 90 percent of all atoms. In most cases, when you hear about hydrogen, it is usually in the context of outer space, military weapons or fuel sources for cars.

Heating your home costs money, no matter how you do it. Unless you have a wood-burning stove in your home and a forest of trees at your disposal, it requires fuel, the appropriate heat and, in some cases, electricity to power the heater.

In humid climates, air conditioners work better than dehumidifiers for one main reason, how they treat the air in the room. Both devices work by passing the air over cooling coils, which should cool down the temperature in the room.

Inverter air conditioners can save you a lot of money on energy bills, as they consume a lot less energy. Some factors to consider before making a purchase are the size of the space you need to cool, the quality of the brand and efficiency.

Shea butter comes from the seeds of the African shea tree. Although it's primarily used in cosmetics for its healing and moisturizing benefits, the butter is edible and used often in African cooking. You'll find shea butter in both refined and unrefined forms.

Pollution occurs when chemicals and other foreign substances leech into the ground, air and water. These pollutants contain toxins that adversely impact ecosystems and the living creatures within them.

Mold and fungus are often found in buildings, including homes. Some strains of mold are harmless and have little effect on health, but some can have very serious effects. Even if the mold and fungus is not visible, spores are released into the air that can have negative effects on your health.

Generally, sulfates are perfectly safe for regular use. Some individuals with a sensitivity to sulfates may want to switch to a sulfate-free shampoo.

Eczema, or atopic dermatitis, is a chronic skin disorder that is characterized by red, itchy skin. According to Mayoclinic.com, treatments include creams that aim to reduce inflammation, relieve itching and prevent future flare-ups.