Find out about the greatest inventions, inventors, ideas, and
discoveries from ancient history to the modern day.
From the humble wheel to electricity, computers to robots,
Inventions: A Visual Encyclopedia covers a range of areas
organized by theme: transportation (including cars and bicycles),
communication (such as pens, TVs, phones, and cameras); home (from
toilet paper to microwave ovens); work (the lathe and the
microscope), health (including... more...