As Director of War Research for the Atomic Bomb Project at Columbia, he worked on purifying U-235 and earlier had been awarded the 1934 Nobel Prize in Chemistry.
Although the work he did in lunar and planetary formation which he detailed in the _book The Planets: Their Origin and Development_ is considered highly influential, he is best known for work in chemistry. As Director of War Research for the Atomic Bomb Project at Columbia, he worked on purifying U-235 and earlier had been awarded the 1934 Nobel Prize in Chemistry. For ten points name this Indiana-born scientist best known for isolating heavy water and discovering deuterium.
Although the work he did in lunar and planetary formation which he detailed in the _book The Planets: Their Origin and Development_ is considered highly influential, he is best known for work in chemistry.
Harold {Urey}