New life for the artificial leaf?

Three years ago, the world was wowed by the advances in building artificial leaves—essentially solar cells that convert water and sunlight into energy. Reality fell short of the promise, but, as Phil McKenna reports for Ensia, there may be new hope for the promise. 

Thanks to the support of readers like you, Per Square Mile remains independent and ad-free.

If you enjoy what you read, please consider supporting the site with a donation.

opening times