Enjoy Don't Destroy - Go Green Earth! 1937 Postcard
Don't destroy." Environmentally friendly (also eco-friendly, nature friendly, and green) are synonyms used to refer to goods and services considered to inflict minimal or no harm on the environment. To make consumers aware, environmentally friendly goods and services often are marked with eco-labels. But because there is no single international standard for this concept, the International Organisation for Standardisation considers such labels too vague to be meaningful. The biophysical environment is the symbiosis between the physical environment and the biological life forms within the environment, and includes all variables that comprise the Earth's biosphere. The biophysical environment can be divided into two categories: the natural environment and the built environment, with some overlap between the two. Following the industrial revolution, the built environment has become an increasingly significant part of the Earth's environment. Save the Planet. A public service announcement (PSA) or community service announcement (CSA) is an advertisement broadcast on radio or television, for the public interest. PSAs are intended to modify public attitudes by raising awareness about specific issues. The most common topics of PSAs are health and safety. A typical PSA is part of a public awareness campaign to inform or educate the public about an issue such as smoking or compulsive gambling. Contrary to popular belief, political campaign advertisements are not PSAs. Public service advertising campaigns are widespread around the world. Such advertising is generally produced and distributed on a cooperative basis by governmental agencies or nonprofit organisations acting in concert with private advertising and mass media companies. In most cases, the nonprofit provides the programming that is to be advertised, while the participating advertising agency and media companies provide creative services, media planning, and dissemination services on a pro bono basis. Often, a charitable organisation releasing a PSA enlists the support of a celebrity; examples include Michael J. Fox's PSAs in the U.S. supporting research into Parkinson's Disease and Crips street gang leader Stanley "Tookie" Williams speaking from prison to urge youth not to join gangs.