Did you know that there are more than 1,100 different bat species? Or that scientists have not yet figured out how all these species are related? Explore the challenges of studying these night fliers.

Did you know that while all bugs are insects, not all insects are bugs? Learn more about "true bugs," whose characteristics include defensive glands that produce and release foul smells.

Scientists study insects by observing them in nature and collecting them for further research. Learn their techniques so you can make your own discoveries with this article and online investigation.

Introduce younger students to space objects and how gravity affects them. Then have them explore the effects of this force with the Gravity Game. 

Could a space rock destroy life on Earth? Learn more about asteroids, comets, and other space objects and what happens when they collide—with each other and with our planet.

Recently, a giant squid was photographed for the first time. Before that, no one had ever seen a living specimen. See how scientists have gone about studying this elusive creature.

Did you know miners must dig up and process as many as 30 tons of rock to make a single gold ring? Take a dazzling look at how gold is mined and transformed.

Did you know that all of the mined gold in the world could easily fit inside your school's gym? Find out what it takes to turn this precious metal into trophies and jewelry.

With an entire habitat in front of them, how do scientists actually inventory the entire site? Find out their tricks of the trade; then apply the principles to your own small site.

Chances are you know that butterflies and moths go through a metamorphosis. But did you know that the same is true for silverfish? Learn more about the two types of arthropod metamorphosis.