Another great way to help starving people around the world is got to Freerice.com , play the game and/or install their toolbar. Then, with each 5 searches you perform with that toolbar, you gain 2500 rice grains, you can donate up to 5000 grains of rice per day.
When you play the game, sponsor banners appear on the bottom of your screen. The money generated by these banners is then used to buy the rice. So by playing, you generate the money that pays for the rice donated to hungry people.