Bill Gates, the world's richest person, is investing a large chunk of his wealth into a project called Reinvent the Toilet.
It is comforting to know that some of the many billions of dollars extorted from hapless computer users is being channelled into a good cause.
The Gates philanthropy is motivated by the fact that some 2.5 billion people have no access to safe sanitation as we know it in developed countries. More than 1.5 million children die each year from associated diseases.
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