By romrodinka / Getty Images The season of Christmas markets has officially begun in Europe. But this year, many cities have chosen to shake up traditions in order to save energy. Fewer street lights, use of more efficient LED lights, no more ice rinks, shorter opening hours… A look at how some markets are doing things differently. The season of Christmas markets has officially begun in Europe. But this year, many cities have chosen to shake up traditions in order to save energy. Fewer street lights, use of more efficient LED lights, no more ice rinks, shorter opening hours… A look at how …