Reducing cost dramatically without reducing effectiveness
7 innovations

Nigerians are ditching 22M diesel generators as solar pays for itself in months

Cash delivered 4 days before a flood is worth $34 delivered 100 days after

Rotting fruit becomes fish feed in 72 hours — 30% cheaper, 70% protein

A $4K house that floats during floods, stays 26°C year-round, and grows its own food
A $5/year HIV prevention pill — and the licensing fight has already started

No-fridge PCR kits tested 500K patients at 40% less than imports

A $40/year injection prevents HIV with 100% efficacy in women