over 180 Million worldwide have their credit card details locked into an iTunes account, as for the exact amount of users its hard to calculate
probably millions...
According to the Wikipedia article on Earth Day (related link below) approximately 20,000,000 Americans participated in the first Earth Day.
It is 80 km wide and 500 km long.
No. It was not number one.
As per trends, popularity and quality there are numerous companies dealing in this area world wide
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apple iphone
6.8 Billion people world wide.
over 3,000 because people die every second
The iPhone 4S.
55,000
Which university?
2 people
1.2milloin people are thought to be starving world wide.
Much less people than needed.
around 12 million people have it world wide
over 8 million people world wide