Google executive chairman Eric Schmidt and the co-founder Larry Page have teamed up with James Cameron, founding Planetary Resources on April 24, 2012, a company whose main declared activity is the space exploration and to expand the Earth's natural resources, "looking for ways to extract raw materials from non-Earth sources", based on "trillions of dollars to the global GDP."
The public switched telephone network (PSTN) is the concatenation of the world's public circuit-switched telephone networks, in much the same way that the Internet is the concatenation of the world's public IP-based packet-switched networks. Originally a network of fixed-line analog telephone systems, the PSTN is now almost entirely digital, and now includes mobile as well as fixed telephones.
Tesla demonstrating wireless transmissions during his high frequency and potential lecture of 1891. After continued research, Tesla presented the fundamentals of radio in 1893
The identity of the original inventor of radio, at the time called wireless telegraphy, is contentious.
Music technology is technology involved with the musical arts, in particular the use of electronic devices and computer software to facilitate playback, recording, composition, storage and performance. This is the top level index page under the Music heading.
Tire rotation or rotating tires is the practice of moving automobile tires from one wheel to another to ensure even tire wear. Tire wear is uneven for any number of reasons. Even tire wear is desirable to maintain consistent performance in the vehicle.
A 2003 General Motors concept car on display at the Test Track attraction at Disney World's Epcot.
The future of the car is a controversial topic, with some advocates arguing that the car has no future, and others that the car will in the future supplant most other forms of transport.
The main trend at the beginning of the 21st century is an increase in the number of cars in Asia.