July2017

All roads to sustainable energy lead to the sun

Humans consume 221 tonnes of coal, 1,066 barrels of oil, and 93,000 metric cubes of natural gas per second. These materials were wonderful for the industrial revolution that started in Britain in the 18th century and made use of “new energy” sources such as coal and petroleum. At the start of the 21st century, however, it’s time to […]