Metabolic protein explains how flies choose 'healthy' food

Many animals, including humans, have a preference for nutrient-balanced diets. Among all essential nutrients, multicellular organisms need to consume the building blocks of proteins, called amino acids, in order to build ...

Supermountains controlled the evolution of life on Earth

Giant mountain ranges at least as high as the Himalayas and stretching up to 8,000 kilometers across entire supercontinents played a crucial role in the evolution of early life on Earth, according to a new study by researchers ...

Why are certain heavy metals okay to eat? (video)

Heavy metals have a reputation for being dangerous, but some are essential nutrients that you can't live without. In this week's episode of Reactions, we explore why:

Study reveals how bacterial pathogen adapts to nutritional stress

In order to cause disease, the human pathogen Staphylococcus aureus must adapt to the changing host environment. Many of these adaptations are mediated through two-component signal transduction systems (TCSs) that coordinate ...

How an 'antibiotic' helps bacteria eat

For years, scientists have known that certain bacteria produce molecules that are toxic to other bacteria when there is competition for food and space. Now, Caltech researchers have discovered these so-called antibiotics ...

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