The game is simple: Answer the daily ocean trivia question and a piece of plastic will be plucked from the world’s oceans, beaches and sea-bound rivers on your behalf. Since 25-year-old Mimi Ausland ...

Test your knowledge of the world's cities, countries, and geographical wonders with these geography trivia questions.

The oceans cover over 70% of the Earth’s surface. The marine ecosystem is the largest and most abundant in the world. But most of the ocean is permanently dark and incredibly difficult to observe. As ...