Great Discoveries and Inventions That Have Changed the World: From the End of the 19th Century to the Present

What would life be like without cars, refrigerators, the Internet, or the omnipresent smartphone? Learn about the discovery of the most important inventions that have influenced the contemporary world, from the end of the nineteenth century to our own time. They include innovations in technology, such as alternating current, plastic, and the robot
communications (cameras, radio, cinema)
medicine, from aspirin and penicillin to x-rays and the pacemaker
and transportation. See what secrets and events led to their creation and meet the exceptional figures who conceived them.