Your watch’s VO2 max isn’t perfect, but you can improve its accuracy with better data and heart-rate tracking.

Using more than a dozen videos related to the shooting of Alex Pretti, The Times worked to establish what is called ground ...

Alex Pretti was confronted on a Minneapolis street by an officer who was later on the scene of his shooting, video analyzed by CNN shows.

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 ...