Its main function was to take human urine or other water waste and make potable drinking water. Austin chose two locations where the prototype could be tested: The desert of Ethiopia, and the high mountain ranges in Canada. The device had to serve three functions: (1) to create enough ...
In recent years, mobile phones, especially smartphones, have been playing an increasingly indispensable role in our day-to-day lives [1,2]. In terms of interpersonal communication, public transportation, online shopping, instant payments, online courses, and information distribution, or even in aspe...