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Styrene is a colorless, flammable liquid, which has a sweet odor and is highly volatile.

Scientists have not unanimously settled on a precise definition of nanomaterials, but agree that they are partially characterized by their tiny size, measured in nanometers.

Mercury, also known as quicksilver, is a naturally-occurring metal that is toxic to living organisms.

Lead is a naturally occurring metal found deep within the ground. It occurs in small amounts in ore, along with other elements such as silver, zinc or copper.

Formaldehyde is a colorless, flammable, strong-smelling chemical widely used to make home building products.

Electric and magnetic fields (EMFs) are invisible areas of energy, often referred to as radiation, that are associated with the use of electrical power and various forms of natural and man-made lighting.

Arsenic is a naturally occurring element that is widely distributed in the Earth’s crust. It is found in water, air, food, and soil.

Air pollution is a mixture of natural and man-made substances in the air we breathe. It is typically separated into two categories: outdoor air pollution and indoor air pollution.

Dust mites are tiny microscopic relatives of the spider and live on mattresses, bedding, upholstered furniture, carpets and curtains.

Many people think animal allergies are caused by the fur or feathers of their pet.