Celebrate designs that address serious modern challenges, this year's INDEX Awards winners include clean energy batteries and a language learning app.

Juabar leases solar-powered charging stations to rural Tanzanians to provide electricity and create sustainable micro-businesses.

A young team of architects is finding a place for age-old building techniques in contemporary architecture.

Overflowing with Malian refugees and in need of classrooms, sandbags made for the most logical and durable building material for a school at Mbera refugee camp.