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Food & Environment

A graphic shows a diverse selection of foods with just one protein source, a single shrimp.
Living World

The curious case of low-protein diets

In the lab, animals live longer on less of the stuff. How could this be, and what does it mean for human aging?

A field of white button mushrooms; one has a brown, wrinkled cap.
Living World

Viruses that roam the fungal kingdom

Mushrooms and other fungi can harbor hidden companions — and some of these may fight pesky or dangerous molds

Conceptual illustration of two images of a person holding a giant fork with strands of spaghetti and a saltshaker. On left, the person reacts with displeasure to large amounts of salt; on right, the person reacts with pleasure to moderate amounts of salt.
Food & Environment

Salt taste is surprisingly mysterious

Too much sodium is bad, but so is too little — no wonder the body has two sensing mechanisms

A green grasshopper peeks out from a grassy lawn
Food & Environment

A warmer planet, less nutritious plants and … fewer grasshoppers?

Higher levels of carbon dioxide are changing micronutrients in grasses, trees and even kelp. What does that mean for animals higher up the food chain?

An animation showing a tiger walking. In place of many of its black stripes are black double helices to depict DNA.
Living World

From tiger scat to DNA to — hopefully — survival

Researchers dig out the elusive cats’ genetic material where they can, to guide efforts at conservation and diversity

Fatu, born in 2000, is one of the world’s last two surviving northern white rhinos. A 2013 photograph shows her hanging out with southern white rhinos at Kenya’s Pejeta Nature Conservancy.
Living World

At San Diego’s Frozen Zoo, a chance for animal immortality

The cryobank is a rich source of genetic knowledge of hundreds of creatures. It may one day be used to bring endangered species back from the brink and deepen the gene pool of wild populations.

Kernza, a trademarked perennial grain from intermediate wheatgrass (right), grows next to a field of annual wheat (left).
Food & Environment

Plant, reap, repeat — and now rethink

Replacing the annual farming cycle with perennial crops could be better for soil, water and wildlife

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