About 2.5 billion people around the world do not have access to modern sanitation. Bill and Melinda Gates Foundation challenged the scientists to reinvent toilet. The main goals of this challenge are: Sanitize waste, Minimal use of electricity and/or water, Produce a usable / re-usable product which is cheap. Designs by various scientists were showcased at … [Read more...] about It’s Not Just Toilets Anymore, They are Tech Wonders