In its slightly wobbly orbit around the Earth, the Moon occasionally blocks the Sun. Astrophysicist Erika Hamden explains why the solar eclipse of April 8th is different, and what you will ...

Earth Day is April 22. Here's what to know about how Earth Day happened and how to celebrate our planet this April.

Someone fascinated by natural objects like glaciers and crystals or awestruck by scenic landscapes ranging from deserts to swamps should be aware of an academic discipline that focuses on solving ...