The row that exploded between Eddington and Chandrasekhar over the death of stars.
The dispute between Vavilov and Lysenko in 1920s Russia over food production.
Geologists Roderick Murchison and Henry de la Beche clashed over the age of Devon's rocks.
Joseph Priestley and Antoine Lavoisier both claimed the discovery of oxygen.
The great clash that occurred between Newton and Leibniz over the discovery of calculus.