The number of Venezuelans in the U.S. has more than doubled in five years, to about 1.2 million. That makes Venezuelans the fastest-growing Hispanic group in percentage terms, far ahead of Ecuadorians ...

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 ...

Evolutionary biology is a subdiscipline of the biological sciences concerned with the origin of life and the diversification and adaptation of life forms over time. Haldane’s rule suggests that in ...