Times have changed, and so have priorities. If, in the old days, the focus had been harnessing energy sources to the fullest extent possible, today, the emphasis is on energy conservation and how to juice out the most out of the little energy we use. One of the more lasting global programs in the field of energy conservation is Daylight Saving Time. More commonly known as DST, Daylight Saving Time is said to be responsible for trimming Americans’ electricity usage by one percent each day. The U.S Congress first placed the country on DST in 1918, out of the need to save resources for the war effort. The articles in this section are all about energy from its sources and uses to the most recent innovations in the field.