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Satellite communications allow TV, radio, data and telephone transmissions to be sent anywhere in the world. Satellites are in orbit around the world, either moving or geo-stationary relative to the earth. They are powered by solar cells and batteries. They relay transmissions from one ground station to another via the network of satellites.
Image: ecat Report
Solar cells convert light energy to electricity. The photovoltaic effect was first demonstrated by Becquerel in 1839. It has recently achieved a level of almost 45 percent efficiency. A 5x5 ft solar cell could be screwed to the side of your house and meet all of your energy needs.
The Internet of Things
The "Internet of Things" refers to objects that can be uniquely identified with an addressable system such as TCP/IPv6. IPv6 with its 128-bit address has scope to have a unique address for every single item in the world. There are approximately 3.4 x 1038 addresses available for use.
You could even give each of your socks unique addresses to ensure that you will never mis-match them again.
Image: Wireless Broadband