Grades 3 - 7

Known as the Ultimate Underdog, the high-flying Rey Mysterio has been a fan favorite since his debut. Trained in Mexican lucha libre wrestling, Mysterio makes up for his small size with… More →

Members of the Cenation unite! John Cena exploded into WWE in 2002, and he quickly became a fan favorite after racking up world championships. If they weren’t fans before, young readers will… More →

For over 20 years, Undertaker has been an almost unstoppable force in WWE. He has collected a record 21 WrestleMania wins, and that's just one accomplishment! When Undertaker eventually makes More →

Much of our understanding of ancient plants and animals comes from the fossil record. Big or small, fossils offer images of life on Earth from billions of years ago! Young paleontologists… More →

Minerals are everywhere and are essential to living organisms. There are thousands of recognized minerals in existence! Discover the properties of quartz, sulfur, and other minerals and learn More →

The ground beneath our feet is made up of a constantly changing mixture of soils. Soils purify water, recycle nutrients, and even change what we breathe in the atmosphere! Young scientists… More →

As one of the most devastating shipwrecks in history, the sinking of RMS Titanic killed more than 1,500 passengers. There were only enough lifeboats for about one third of the people on… More →

Scientists categorize rocks into three different groups depending on how the rock was formed. Humans have used rocks from all groups as tools and in construction for thousands of years.… More →

Never come between a mother bear and her cubs. She will violently maul you until you are no longer a threat. Even if you're fortunate enough to survive her attack, you will likely leave with… More →

Compare a hummingbird and an ostrich; the differences are striking! One is tiny and hovers in the air like a helicopter. The other is massive and stays grounded, sprinting rather than flying. More →

Underwater, a large, lively community of unique animals thrives. Many of these animals belong to the fish class. There are colorful clownfish, lurking sharks, and silly sea horses. There are… More →

Some animals lead a double life. First, they pose as aquatic creatures, breathing through gills and using tails to maneuver underwater. Then they exchange these features for legs and lungs to More →