Grade 3

Cameras rolled as the huge airship, Hindenburg, caught fire and crashed in New Jersey on May 6, 1937. The disaster was so shocking that the name Hindenburg has become synonymous with… More →

After successfully going into space nine times, the Space Shuttle Challenger exploded just 73 seconds into its tenth mission. Many people saw the blast happen on television! Find out what… More →

On April 20, 2010, the Deepwater Horizon rig exploded, leading to the biggest offshore oil spill ever in the United States. The explosion was visible for 35 miles! Readers will watch workers… 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 →

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 →

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 →

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 →

When it comes to lemurs, it's a woman's world. Females rule—they eat first, win all family arguments, and fight enemies on the front lines. Learn why you'd want to be “one of the ladies” in a More →

Trespassing in mountain lion habitat is a dangerous idea. Mountain lions do not share their territory, and they will not hesitate to stalk, pounce, and bite to defend it. Read about people… 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 →

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 →