quiz

The U.S. recycling system uses a “single-stream” model that focuses on the big blue curbside...

Everyday recycling takes a little extra time — and will until the companies that make...

Wildfire season is arriving earlier every year. Are you prepared to prevent fires if you...

Are you good at remembering quotations? In this week’s quiz, see if you can identify the...

Species are going extinct at an accelerated and dangerous rate. The world is facing the...

For 52 years on Earth Day, people have gathered to pick up litter, plant trees,...

Are you a recycling trivia champion? In this Earth911 quiz, you’ll test your knowledge of...

The Earth is a remarkable place, full of surprises and value that must be preserved...