Kiki Warr, Author at New ÐÓ°ÉÔ­´´ Science news and science articles from New ÐÓ°ÉÔ­´´ Fri, 26 Oct 1990 23:00:00 +0000 en-US hourly 1 https://wordpress.org/?v=7.0.2 242057827 Ozone, the burden of proof: Action to protect the ozone layer began long before scientists knew that there had been any damage. What proof do we need to write international treaties protecting the environment? /article/1821219-mg12817404-500/?utm_campaign=RSS|NSNS&utm_content=currents&utm_medium=RSS&utm_source=NSNS Fri, 26 Oct 1990 23:00:00 +0000 http://mg12817404.500 1821219