Bill Gates announces winner of tiolet challenge . The new toilets will be showcased at a fair this week . Comment: Lack of toilet access is blamed for the deaths of 1.5 million children each year , experts say .
Bill Gates announces winner of tiolet challenge . The new toilets will be showcased at a fair this week . The challenge is part of an effort to improve worldwide sanitation . Lack of toilet access is blamed for the deaths of 1.5 million children each year , experts say .