The atoms of some elements, like copper, do not join together and instead exist on their own as individual atoms and are not molecules. The atoms of other elements, however, like hydrogen ...

"We are really trying to understand how far we can go, chemically, toward larger biological molecules and what environments are needed to form them." ...

NASA's Curiosity Mars rover has detected the largest organic (carbon-containing) molecules ever found on the red planet.

While the presence of these molecules is not proof of ancient life on Mars, scientists say it shows we could detect chemical ...

The chemical element sulfur is essential for all lifeforms and is a building block of proteins and amino acids. By studying ...