Most people are aware that there is suffering in other parts of the world. Most people are aware that the US does a lot to help. However, what most people are not aware of is that the US spends less than 1% of its budget on foreign aid. What most people, or at least myself, are also not aware of, is that you can actually do something to change this. You really can help the starving children in Africa.
I work for The Borgen Project, and our goal is to help people realize they can impact the decisions Congress makes. Congress tallies the calls they receive.* If an issue receives enough attention, Congress will do something about it. So, if you want something to be done to help people receive electricity in Africa or for more people to have access to clean water (here's a list of issues trying to be passed), just follow this link, type in your zip code, and say, "I am calling because I support this act and would like it go through." Or, you can say what the site says, "I'm a Borgen Project supporter and would like to see increased funding for Foreign Aid."
Email is also an option.
So, take 5 minutes, call your people, and then you'll know you did something good for other people. :)
*For your interest, here's a copy of what the weekly tally sheet looks like.