Betsy Teutsch

Engineers have figured out how to turn plastic trash into a material that keeps rain and heat out while letting sunlight in.

For extremely low-income families, insurance payouts for a health crisis can make the difference between temporary destabilization and a downward economic spiral.

By protecting this crucial crop from the dreaded cowpea weevil, farmers are gaining greater economic security.

Chemist Pilar Mateo has come up with a paint that slowly releases insecticides, making homes inhospitable to parasite-spreading bugs.

At Iko-Toilet centers, customers can do their business, have a drink, and maybe even get a haircut, all in one place.

Like the installment plans of the Great Depression, Simpa Networks' "Progressive Purchase" agreements are enabling customers in rural India to get solar power for their homes.

Wonderbags are thermal-retention cookers, technology that's been around since humans realized that wrapping up a hot pot can save precious fuel. And now one South African entrepreneur has figured out how to sell them around the globe.

When Arunachalam Muruganantham went to purchase disposable napkins for his wife, the only ones available were imported and quite expensive. So he figured out how to make them.

Eco-Fuel Africa has set up a system for the production and distribution of "biochar briquettes"—small blocks of carbonized agricultural waste that provide a cleaner, easier-to-access fuel for homes across Uganda.