Can you tell the difference between a giraffe's bones and those from a mammoth? Test your knowledge of fossils.
How do your fossil-sorting skills stack up? Put them to the test with this kid-friendly online puzzle.
Can you tell, just by looking at it, if a pygmy loris is a rodent, a primate, or a raccoon's relative? Put your knowledge to the test.
What happens when cyclops, the one-eyed giant from Greek mythology, meets Indonesia's shaggy lion-like Barong? Well, that's all up to you. Don these masks and tell your own mythic tale.
Showcase the fire of your opinions or let your imagination take flight with these colorful, ready-to-print stationery files.
Does a dragon always breathe fire? Can a unicorn have colorful, shiny scales? Find out how well you know your mythic creatures with this map challenge.
Test your knowledge about virtual water, the water you didn’t know you were using.
Can you solve these four chilly puzzles about how people and animals live in the Arctic? Put your story telling skills to the test and collect new OLogy trading cards.
From the day in the life of a pond to a trip through the NYC water supply system, examine the world’s most precious resource with these kid-friendly titles.
Life in the icy Arctic isn't so hard if you're prepared! Solve the puzzle of how people and polar bears live in a land of ice.
Wondering how you can use water more wisely? Print this check list of simple things that you can do to help protect fresh water and the living things that depend on it.
Did you know that all living things need water? Or that the water on Earth today is all we will ever have? Learn more about this precious resource.
When it comes to global warming, your day-to-day actionscan make a big difference—if millions of people do it. Find out what you can do to save energy and slow climate change.
Think your an expert on our changing climate? Test your knowledge with this interactive quiz.
This isn't the first time Earth's climate has changed, but it's the first time human activity has caused it. Learn more about global warming and how — and why — we should slow it.