How nitrogen-fixing bacteria sense iron

Researchers at the University of East Anglia have discovered how nitrogen-fixing bacteria sense iron—an essential but deadly micronutrient.

Those who live longer have fewer children

A long life and lots of children—that was quite a common aspiration until not so long ago. But the world of animals reveals that high fertility and longevity are often mutually exclusive: Particularly animals with shorter ...

Tree of life brought to scale by Yale scientists

Examples of biological scaling are everywhere. The paw of a mouse is smaller than the human hand. Our own organs and limbs typically scale with our body size as we develop and grow.

Environmental pollutants could impact cellular signs of aging

Researchers have linked some environmental pollutants with diseases, a decreased life span and signs of premature aging, such as wrinkles and age spots. But can accelerated aging be detected at the cellular level in healthy ...

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