By David South, Development Challenges, South-South Solutions SOUTH-SOUTH CASE STUDY  Mobile phone usage has increased hugely across the global South in the past five years. In Africa, the number of mobile phone subscribers reached 545 million in 2013, while there are 3.5 billion mobile phone users in Asia and the Pacific (ITU). Some 93 million people … Continue reading Mobile Phone Microscopes to Revolutionize Health Diagnostics