Jessica Hartogs

When one thinks of the world's most expensive cities, images of New York and London probably pop to mind. But those two do not even make the list.

The Napster founder and former Facebook president created the Parker Institute for Cancer Immunotherapy, which will focus on using the body's immune system to combat cancer cells.

The FBI last month convinced a federal judge that the only way to get into the phone was to make Apple write code to undermine its own security protocols. Apple is refusing to comply.