These chains come in a wide range of lengths. In humans a typical protein is about 400 amino acids long; some are a lot longer. Molecules of RNA, one of the two nucleic acids, can reach up to 100,000 ...

SPRINGBORO — Carol Clune’s fourth-grade science class at Dennis West Elementary made models of molecules to demonstrate the difference between atoms, elements and molecules. The toothpicks represent ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Using the world’s most powerful X-ray laser, researchers have captured the hidden, never-ending vibrations of atoms inside molecules. This first-ever direct view of zero-point motion reveals that ...

As part of the effort to better understand the evolution of the brains in people and animals, a research team has generated the world's largest primate brain-wide atlas. A longstanding mystery in ...

Copper atoms are larger than aluminum atoms. There are fewer copper atoms than aluminum atoms in the cubes. Copper atoms are much more massive than aluminum atoms. The extra mass makes copper more ...