Scientists have identified a mirror-image form of the amino acid cysteine that selectively slows the growth of certain ...

Oxygen fills the air today, but for most of Earth’s early history it barely existed. Scientists say the atmosphere did not hold steady oxygen until about 2.

When people talk about “burning fat,” it sounds like something melts away inside your body and vanishes. What actually ...

As we age, our cells don’t just wear down—they reorganize. Researchers found that cells actively remodel a key structure called the endoplasmic reticulum, reducing protein-producing regions while ...

How Culture Shapes Our Relationship With Tears Cultural attitudes toward crying vary widely across the world. Some cultures embrace public expressions of grief, viewing shared tears as essential to ...

Opportunistic infections can contribute to antimicrobial resistance making these infections more severe than would occur otherwise. Some uninvolved pathogens that cause these infections possess ...