Try this on for size: If Earth were the size of your head, then Mercury would be an orange and Jupiter a small car. Size up the planets for yourself with a model scavenger hunt.
Can you convince your friends to spend the next school break on Pluto? Let your imagination run wild, and write an inspiring work of science fiction.
Do you know what makes you different from a snail, a tree, or even your best friend? Find out with this hands-on look at genetic code—and build a model that's a million-plus-times larger than life.
Here's a very cool experiment that just might bring a tear to your eye. Use a blender to separate the DNA from an onion. Then hold the genetic material in your hand.
Nature + Nurture = You! While it may look like a simple equation, the combination of your genes and your environment is actually very complicated. Find out if your answers match your family's.
How can you wear a chimp on your wrist—without getting primate elbow? The answer to this riddle is not as tough as it may seem. Need a hint? Take a closer look at genetic code.
With two "seed leaves" to store food, soybean seedlings have great built-in growth resources. Learn more about these seedlings’ other components with this illustrated guide.
The tibia's connected to the femur; the head's connected to the prothorax ... Learn the parts that make up an insect with this illustrated guide to a grasshopper.
If you want to know if you're holding a female, flip it over and look for the lung slit and epigynum. Get a close-up view of what both these parts look like.
Not all arthropods are equal in the eyes of plants. To attract helpful ones and fend off harmful ones, plants use their important chemical and mechanical attributes.