Have you ever wondered what ovulation looks like from the viewpoint of the egg? Or wished you could cruise along the lymphatic system through a tangled web of capillaries? Now, your childhood dreams of having Ms. Frizzle for a teacher can be (practically) fulfilled: A new interactive Web site called Visible Body is the Magic School Bus of the 21st century. The psychedelic site just launched on Tuesday, and is the first free (with registration), Web-based, 3D interactive model of the human body. The site includes eye-popping videos and images, including the screenshots posted here.