Refined sugar granules sit during analysis in the laboratory at the Zainsk sugar plant, operated by ZAO Agrosila Group, in Zainsk, Russia, on Friday, Sept. 4. 2015. Raw-sugar futures turned a bit sweeter for bulls, climbing the most in almost four years on concerns that adverse weather may hurt crops in Brazil and India, the top producing countries. Photographer: Andrey Rudakov/Bloomberg via Getty Images