Meet Rosalind Brewer , the CEO of Sam 's Club , part of Walmart . Chemistry graduate now heads company worth billions of dollars . `` The first response from people is that I have a visible difference -- Comment: Laying off 2,300 workers was one of toughest moments of her life .
Meet Rosalind Brewer , the CEO of Sam 's Club , part of Walmart . Chemistry graduate now heads company worth billions of dollars . Comment: Laying off 2,300 workers was one of toughest moments of her life .