Zürcher Nachrichten - Nature (English)

Tunisian startup turns olive waste into clean energy

In a northern Tunisian olive grove, Yassine Khelifi's small workshop hums as a large machine turns olive waste into a valuable energy source in a country heavily reliant on imported fuel.

Clouds changing as world warms, adding to climate uncertainty

People have always studied the skies to predict the weather, but recently scientists have noticed that clouds are changing on a global scale -- posing one of the greatest challenges to understanding our warming world.