Magnitude scales can be used to describe earthquakes so small that they are expressed in negative numbers. The scale also has no upper limit. Learn more about how we measure earthquake magnitude.

Division of Preventive Medicine, Department of Epidemiology, Brigham & Women's Hospital, Harvard Medical School, Harvard School of Public Health, Boston, Massachusetts USA Correspondence to Dr I-Min ...

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Having topped the scales at 15st 7lb, Gillian Coia was delighted that using weight-loss jabs had succeeded where so many diets had failed - helping her to finally slim down. But while the mother of ...