Invisible Watery World

When you visit a pond or the beach, you might see fish, frogs, crabs, insects, seaweed, or lily pads. Don’t let your eyes fool you, though… there’s a hidden world in water full of creatures too small to be seen!

Spaced out Physiology

Being an astronaut is a cool job, but before you sign up you should know life in space isn’t all fun and games.  The lack of gravity can make our bodies act in strange ways.

Sonoran CSI

Little water, sweaty, hot summer days and frigid winter nights make the desert an uninviting place for most animals and plants. But hiding just below the surface, the desert is alive with microbes—tiny, living things too small to see without magnification.