Everyday life and health: pendulum clock; inoculation; matches; pre-fabricated buildings, cotton gin, razor blades; antibiotics, frozen food, Post-It notes, nylon, Teflon, Velcro, microwave oven, cancer research breakthrough, Sir Paul Nurse. Getting around: stump-jump plough; hot air balloon; steam engine; elevator; powered flight; hovercraft. Lenses and light: telescope; photography; photocopier; polaroid camera. electricity: lightning conductor, battery (electric), telephone, telephone exchange, electric light bulb, radio, television. Patience and planning - sound recording, bicycle, vacuum cleaner, personal stereo, video games, Internet (World-Wide-Web).