Cook turns on charm offensive

Apple unveils slew of clean energy programs with an eye on long-term gains in China

Apple Inc's Chief Executive Tim Cook is making his second visit to China in less than six months.

Paying tribute to historic landmarks, exchanging pleasantries with Chinese developers and announcing clean-energy programs, the head of the United States-based tech giant is showing the country how much he needs long-term business growth in the world's largest smartphone market, especially when demand has started to shrink.