Ecuador's Choco rainforest rivals the Amazon in biodiversity, yet only 2% of it remains; Topher White has a solution: a solar-powered listening device that reports illegal logging in real time.

Nthabi and her co-founders at Easy Solar aim to bring back the power to one of the world's poorest countries, Sierra Leone, by harnessing the one thing that cannot be taken away: the sun.

At Kakuma Refugee Camp, the children are hungry learners but lack proper infrastructure to support their active minds; exploring schools made of innovative material to aid children's learning.