Four years ago yesterday, the Deepwater Horizon oil rig exploded, killing 11 men and spilling thousands of barrels of oil into the Gulf. This Thursday is the first anniversary of the Rana Plaza collapse in Bangladesh, which killed more than 1,100 garment workers...Why, with this global invisible army of people working to prevent them do these disasters still happen? Why do they still happen when there are an unprecedented number of CEOs talking about corporate social responsibility (CSR)? More importantly, what does this "invisible army" need to succeed? Here are some of the themes that emerged from my interviews and reflections...[refers to Microsoft, Yahoo!, BP]