The future of fuel?

The World

Is this brown sludge the future of fuel? It used to be garbage, but now a Danish energy company wants to turn it into ethanol, and other biofuels. Find out more in our latest Technology Podcast with host Clark Boyd.

Invest in independent global news

The World is an independent newsroom. We’re not funded by billionaires; instead, we rely on readers and listeners like you. As a listener, you’re a crucial part of our team and our global community. Your support is vital to running our nonprofit newsroom, and we can’t do this work without you. Will you support The World with a gift today? Donations made between now and Dec. 31 will be matched 1:1. Thanks for investing in our work!