Activists dressed as iPhones paraded in front of the Cupertino campus, demanding that Apple power its iCloud with clean energy instead of coal. Two people were arrested.
Greenpeace says more than 215,000 people have signed their "Clean our Cloud" petition since they launched their campaign last month.
Apple says 60 percent of its power at its North Carolina data center will soon come from a solar array it's building near the site.
