U.S. stocks tick down as Apple drags tech sector lowerYearender: Silicon Valley keeps trends as Artificial Intelligence goes mainstream in 20174th CICPE scheduled from April 13China, Zambia to Boost Cooperation as Ties ElevatedXi Stresses Advancing New Industrialization in Pursuit of Chinese ModernizationFour Long March 11 launches by sea plannedCuriosity mars rover begins studying Vera Rubin RidgeChina releases highPeople visit Inner Mongolia Science and Technology CenterChina launches new Earth observation satellite