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Physical sciences/Chemistry/Chemical mixtures/Colloids/Aerosols

September 16 is the International Day for the Preservation of the Ozone Layer. How much do you know about the ozone layer?

The new issue of Science & Diplomacy, AAAS’s quarterly publication, offers a framework for nations seeking to pursue science diplomacy and articles exploring a range of promising initiatives undertaken in Africa, the Middle East, and even in orbit above Earth.

Scientists working on the transmission of the H5N1 avian influenza strain have voluntarily agreed to halt research for 60 days to allow time for international discussion on its benefits and potential harms.

In a letter published today by Science and Nature, the researchers acknowledge that they and the rest of the scientific community need to clearly explain the benefits of this research and the measures taken to minimize its possible risks. They propose an international forum for the scientific community to discuss these issues.