in History
A warlord murders his puppet sovereign
The ruthless warlord Zhu Quanzhong killed Emperor Zhaozong of the Tang dynasty after seizing the imperial government. The assassination of the penultimate Tang emperor was the near-final act in the dissolution of one of China's greatest dynasties. Zhu would establish the Later Liang dynasty, plunging China into the Five Dynasties and Ten Kingdoms period.
A chemist who helped build the atomic age
Paul Hugh Emmett was born in Portland, Oregon. His pioneering work in catalysis advanced chemical reactions, while his contributions to the Manhattan Project helped separate uranium isotopes essential for the atomic bomb. His development of BET Theory, explaining gas adsorption on surfaces, remains fundamental to materials science.
The Four Level Interchange, first stack interchange in the world opened in Los Angeles.
The Four Level Interchange, first stack interchange in the world opened in Los Angeles.