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1. Galaxies are "wasteful" and retain fewer materials needed to build stars and planets, says new study

   Galaxies “waste” large amounts of heavy elements they generate via star formation by ejecting them up to a million light years away

2. PFAS: you can’t smell, see or taste these chemicals, but they are everywhere – and they’re highly toxic to humans

   Dr Patrick Byrne, Reader in Hydrology and Environmental Pollution, writes in The Conversation on the growing dangers of 'forever chemicals' - PFAs - in our water resources.