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Virtual events The art of statistics Statistician David Spiegelhalter asks if we can communicate uncertainty about facts, numbers and hypotheses without losing credibility. Thursday 23 July at 6pm BST and on demand. newscientist.com/events Podcasts Weekly Half a year in a world of covid-19, meat production breaking Earth’s nitrogen limits and figuring out the weight of gravity. Plus: two debut missions to Mars from the United Arab Emirates and China. newscientist.com/podcasts Newsletter Launchpad Our free newsletter sends you on a monthly voyage across the galaxy and beyond. newscientist.com/sign-up/launchpad Online Covid-19 daily update The day’s coronavirus coverage updated at 6pm BST with news, features and interviews. newscientist.com/coronavirus-latest…