Crowds gathered at Enghelab Square to celebrate the announcement of Mojtaba Khamenei, the new supreme leader of Iran. Family members at the grave of a loved one who was killed by American-Israeli ...

Physics is the search for and application of rules that can help us understand and predict the world around us. Central to physics are ideas such as energy, mass, particles and waves. Physics attempts ...

Chemistry is a branch of science that involves the study of the composition, structure and properties of matter. Often known as the central science, it is a creative discipline chiefly concerned with ...