Physicist Dr Amanda Barnard has been using supercomputers to find the balance between sun protection and potential toxicity in a new generation of sunscreens which employ nanoparticles. The metal oxide nanoparticles which block solar radiation are so small they cannot be seen, so the sunscreen appears transparent. But if the particles are too small, they [...]
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We know more about the topography of Mars than that of Earth because 70 per cent of our planet is covered by water. Now University of Sydney PhD student Kara Matthews has used satellite data and GPlates, a computer package developed at the University, to create a complete digital map of the many geological features [...]
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