We live in a time when people are less optimistic, more cynical and have lower expectations, in part because they see government and other institutions as ineffective and unresponsive. Of course the challenges we face today are as solvable as any problems we have confronted in the past. We as individuals still can make a difference. How? Well, one way is through our investments. We don't have to wait for governments to take action. We can actually increase our influence over world events, and potentially have a greater impact (and feel a little less powerless) not just through civic participation, or voting, or supporting non-profits - all of which remain vitally important - but through our role as investors. Rather than investing in fossil fuel companies, you can invest in energy efficiency and renewable energy; clean water and pollution control; sustainable food and agriculture. The bottom line: As investors, we have more power than we realize. We can prod and pressure and cajole companies into doing the right thing. Unfortunately, too many of us fail to leverage this power. Investors are not powerless. We can move the needle. And ... it is both a moral imperative and an economic imperative that the needle be moved.