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 ...

For more than a century, fossils meant bones, shells and the occasional imprint of a leaf. Now, a wave of research is showing ...

Scientists warn of taking mirror molecules too far. Learn more about their benefits and risks. Nature has some peculiar ways of creating molecules. Many molecules, such as DNA, proteins, and sugars, ...