Christy Walton

Bill Gates stands atop Forbes magazine's annual list of the world's richest people, as Facebook Inc's Mark Zuckerberg joined the top 20 and basketball star Michael Jordan ploughed new air by making the list for the first time.

Australia's richest person Gina Rinehart has eclipsed Wal-Mart heiress Christy Walton to become the world's wealthiest woman, according to an annual index by Business Review Weekly (BRW).

Bill Gates stands atop Forbes magazine's annual list of the world's richest people, as Facebook Inc's Mark Zuckerberg joined the top 20 and basketball star Michael Jordan ploughed new air by making the list for the first time.

Australia's richest person Gina Rinehart has eclipsed Wal-Mart heiress Christy Walton to become the world's wealthiest woman, according to an annual index by Business Review Weekly (BRW).