The Toilet is being Reinvented!
|Professor Michael Hoffman of California Institute of Technology explains his team's winning toilet entry.|
Microsoft co-founder Bill Gates has launched a search for a new toilet better suited to developing countries to help prevent disease and death. (us)
A charitable foundation founded by Gates and his wife kicked off a "Reinvent the Toilet Fair" in Seattle and awarded prizes for promising innovations.
"Toilets are extremely important for public health and, when you think of it, even human dignity," Gates said.
"The flush toilets we use in the wealthy world (them) are irrelevant, impractical and impossible for 40 per cent of the global population, because they often don't have access to water, and sewers, electricity, and sewage treatment systems."
The Toilet Fair was described as a swirl of about 200 inventors, designers, investors, partners and others passionate about creating safe, effective, and inexpensive waste management systems.
Universities from Britain, Canada, and the United States were awarded prizes in a competition launched a year ago challenging inventors to come up with a better toilet.
First place went to the California Institute of Technology for designing a solar-powered toilet that generates hydrogen gas and electricity.
Loughborough University came in second for a toilet that transforms waste into biological charcoal, minerals, and clean water.
Third place went to the University of Toronto for a toilet that sanitises human waste and recovers minerals and water.