In Kenya, milk often goes bad or is contaminated before it even reaches the market. A few simple design innovations could fix that.
When you buy milk in America, it generally comes from farmers with hundreds of cows. They do their own milking with mechanized equipment, and, generally, their own pasteurization and bottling. In Kenya, it's different. About 80% of the country's milk comes from small-scale farmers with a few cows, who milk by-hand. They don't do bottling and, instead of trucks to get to market, they go by bike or foot.