The article explores the feasibility of engineering different types of houseplants to give signals when they sense particular environmental contaminants.

Microbes are being made that don't exist in nature, bugs you can sprinkle in a field and will glow red in the presence of environmental contaminants.

Chemical hazards include environmental contaminants, food ingredients (such as iodine), heavy metals, mycotoxins, natural toxins, improper storage, processing contaminants and veterinary medicines.

Investigations found the presence of a variety of unspecified environmental contaminants associated with the construction of rocket launcher parts.

Food chain studies have had an important role in ecotoxicology studies tracing the pathways and biomagnification of environmental contaminants.