The Earth is looking for environmentally mindful students

During the 1970s researchers observed that the amount of ozone in the atmosphere was decreasing moderately and an ozone “hole” was visibly expanding around the polar regions. The idea of a rapidly-growing hole in the atmosphere – which could have fatal consequences for humanity – caught on with the public so strongly that people reduced their use of chlorofluorocarbons and other ozone-depleting substances, and compelled companies and governments to take action. In 1987 the Montreal Protocol was signed, phasing out the use of some of these substances in industry. More...