Apple says it is fixing a big hole in its clean energy strategy by partnering with its far-flung manufacturers to reduce carbon emissions from factories. But the third-party suppliers of Apple's iPhone glass covers, antennae bands and other key parts continue to rely on electricity from the burning of fossil fuels, such as coal. SEE ALSO: How Apple is taking the tech world's love affair with renewables to a new level Lisa Jackson, Apple's vice president of environment, policy and social initiatives, announced a handful of initiatives on Monday that will see Apple's manufacturers invest in wind and solar projects and energy-efficiency upgrades. "We are firm believers that everybody has a responsibility to address climate change," Jackson said in an address at the launch event for the 2016 Climate Week in New York City. About 77 percent of Apple's total carbon dioxide emissions come from the company's global supply chain, including mainly companies and manufacturing sites that Apple neither owns nor directly operates, said Jackson, who was head of the U.S. Environmental Protection Agency from 2009 to 2013.