One person's trash is another person's clue. It's amazing how much you can learn about people just by examining what they throw out. Grab a thick pair of rubber gloves, and dig in! 

In the future, if archaeologists were to dig up artifacts from your life, what would they find? What would these objects tell them about how you lived? Build your own time capsule, and send a tailored message to future generations.

Have you ever gotten lost in a new place? Chances are you used a map to find your way. Archaeologists use maps to find their way around an excavation site—but first they have to draw them.

If protecting the world's animals and plants is one of your goals, then you need to meet these OLogists. Find out where Ismael, Keally, Marco, and Eleanor have followed their curiosity.

Dive into marine biology with Gabriela, Gwyneth, Luke, and Melanie. You'll travel from the west coast of Africa to the north coast of Ireland, meeting sea birds, seals, and lots of fish.

How well grounded is your knowledge of our planet? Test your Earth science knowledge with this interactive quiz. Then, examine your faults—and the rights answers.

Do you dig the Earth? If so, you'll want to meet Arjun, Diana, Ruthmabel, and Ed. From volcanoes to deep sea vents, find out where these OLogists' interests have taken them.

From any place on Earth, a compass will always point north. But do you know why? Explore the inner workings of this tiny magnet by building one—and then testing it in your neighborhood.

Want to take a close look at the layers that make up our solid Earth? Cook up a model that's good enough to eat—from the spice drop inner core to the thin chocolate crust.

No matter where you find mineral salt—on your table or at the beach—you'll see its unique cube-shaped crystals. Take a sweet look at the crystal patterns and compositions of minerals.