Harold Clayton Urey: Pioneer in Isotopic Chemistry and Nobel Laureate Early Life and Education:Harold Clayton Urey was born on April 29, 1893, in Walkerton, Indiana, USA. He grew up in a farming family, the son of Samuel Clayton Urey and Cora Rebecca Reinoehl Urey. Urey showed an early aptitude for science and, despite the limited… Continue reading Biography of Famous Chemists Harold Urey