How much do you remember about planet Earth in the news over the last 12 months? Take our quiz to find out! When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...

Every day is a good day to celebrate Mother Earth. From mountain peaks to profound ocean depths, our planet hosts a complex array of plants and animals that all contribute to the beauty of our shared ...

Millions of asteroids are floating around in space. Find out what you know about these relics of our solar system. (Jungmin Ryu for The Washington Post) Warning: This ...