Caltech researchers have identified a novel chemical reaction that could explain the formation of the building blocks of DNA and RNA, the molecules that encode all of life's functions. The work is an ...

The chemical element sulfur is essential for all lifeforms and is a building block of proteins and amino acids. By studying sulfur-based molecules in space, scientists are working to understand the ...

When scientists look to the skies for clues about life's origins, water is one of the first things they seek. Life, as it's understood today, requires water, making its cosmic origins a significant ...