U.S. stocks tick down as Apple drags tech sector lowerFlu season sees spike in drug productionChina continues to push deleveraging despite initial progressEconomy on stable footing, experts sayNew power system shows example of renewable energy developmentMolecular identified as key to suppress inflammation in brainMajor lithium reserves discovered in SichuanStudy links pesticide to breathing problems in children living near farmsChina launches new mobile telecommunication satelliteWorld should focus more on small businesses, young people: Jack Ma