Study Of 1,000 38-year-olds Shows ‘Biological Age’ Ranges From 30 To 60

Members of the first graduation class of Tuscarora High School toss their mortar boards into the air after the completion of the commencement ceremony held in the school's gym Tuesday, June 12, 2012, in Leesburg, Va. How will they age in 20 years? (Katherine Frey/The Washington Post) A team of researchers led by Duke [...]