Learning from a circular economy pioneer

Back in the 1990s, 60 percent of waste went to landfill in the Swedish city of Lund. Today it's less than 2 percent, and the region is a pioneer of the burgeoning circular economy.

Producing fertilizer without carbon emissions

Researchers at ETH Zurich and the Carnegie Institution for Science have shown how nitrogen fertilizer could be produced more sustainably. This is necessary not only to protect the climate, but also to reduce dependence on ...

How light and temperature work together to affect plant growth

Plants lengthen and bend to secure access to sunlight. Despite observing this phenomenon for centuries, scientists do not fully understand it. Now, Salk scientists have discovered that two plant factors—the protein PIF7 ...

How fast-growing algae could enhance growth of food crops

A new study provides a framework to boost crop growth by incorporating a strategy adopted from a fast-growing species of green algae. The algae, known as Chlamydomonas reinhardtii, contain an organelle called the pyrenoid ...

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