• The study on koalas given antibiotics found that they had little effect on overall diversity of gut bacteria and did not definitively show that particular bacteria are essential (31 March, p 12).
• Bling spring: diamond needles were bent by a nanoindenter inside a scanning electron microscope (28 April, p 9).
• Angela Gallop in fact suggested that forensic laboratories must produce “impartial, independent and objective evidence” (28 April, p 22).
• Significantly, the probability of the apparent discrepancy in Hubble constant values arising in the data by chance was 1 in 1000 and new work has cut that to 1 in 7000 (5 May, p 9).
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• Your move, Death: the status of planet Uranus as the seventh is sealed (Feedback, 12 May).
