Wood, coal, or natural gas are the usual culprits in terms of cooking fuel, but some clever chemistry makes poop into a surprisingly sustainable alternative.

If natural gas was most often found naturally venting from the earth without capture, one might think there was something deeply wrong with an economy that failed to harness it. With a few ...

In sub-Saharan Africa, over 600 million people (more than 50% of the population) are without access to electricity. Malawi has one of the world’s lowest electricity access rates – just 14.1% of the ...