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 ...

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 ...

Did you know that beryllium is transparent to X-rays? Or yttrium is found in moon rocks and bullet-proof glass? Or that curium was named after Pierre and Marie Curie? Or that because tantalum is used ...

What makes the idea remarkable? It was a way of organising elements in the absence of any theory (Image: Theodore Gray/Visuals Unlimited/Corbis In A Tale of Seven Elements, Eric Scerri reveals ...