On the bench · not built yet

Drop Zone

Drop objects on Earth, the Moon and Mars; gravity always pulls down, toward the center.

Nearby on the shelf

Zoom into sugar dissolving and air in a balloon; particles too small to see explain what happens.

Identify unknown powders by testing with water, vinegar and iodine; mixing some makes something new.

Build a food web, then remove a species and watch the web wobble or collapse.