Test your knowledge — Science

Editorial package on the Science & Nature page of nationalgeographic.com

Stories: Octopuses have a lot of secrets. Can you guess 8 of them? — A master of disguise, cunning escape artist, and selfless parent, the octopus is an extraordinary creature. How well do you know them?; How different types of tea impact your body and mind — Nearly all tea comes from one plant, yet there are many varieties in color and effects. Build your own cup and discover which teas calm, energize, or even do both.; How stressed are you? Answer these 10 questions to find out. — This questionnaire—first developed by psychologists in 1983—is one of the most widely used stress perception assessment tools in the world.; Design your own seashell — Our interactive tool lets you harness the power of physics and math to coil, twist, and dilate a shell into whatever shape you can imagine—and then share your creation.