Vision-ChangerTopic:

On November 18, 1906, Chinese ornithologist Tso-hsin Cheng [Zheng Zuoxin] was born. As a boy, he learned to identify the birds in the Fujian forests by their calls. Travelling to the United States, Cheng completed doctoral studies at University of Michigan before taking a…

Right to the Core On June 4, 1889, geophysicist and mathematician Beno Gutenberg was born and made the study of Earth’s interior his life’s work. He was the first to determine the radius of Earth’s core. Perhaps the most important information geologists gather about…