How can engineering improve the lives of millions of people? The people of Bangladesh were getting really sick because of the bacteria that they were getting from their water, which was untreated and dangerous. Amy Pickering decided that there must be a simple solution to that problem. She designed a contraption that attaches to the water pump that the Bangladeshi people were getting their water from. It killed the bacteria by distributing a small amount of bleach into the water supply. This is an effective solution because it is cheap and takes advantage of how the people are already getting their water. With some research and a simple device, Pickering saved millions of people from diseases that come from drinking and using dirty water. Includes background essay. [4:48]