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 ...

Scientists develop non-invasive indicator that changes colour if a wound becomes infected Professor Mills says the research could have a major impact on healthcare globally: “The colour-changing ...

However, water comes from different sources, like tap water or river water. These water samples have other substances dissolved in them. They might show up as slightly acidic or slightly alkaline ...