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 ...

Using an advanced technique, scientists have demonstrated that a chemical reaction powered by light takes place ten thousand times faster at the air-water interface -- what we usually call the water ...

Once upon a time, when our planet Earth was very young and very new, there was not a single scrap of life on it to be found. Then, somewhere, somehow, some quirk of chemistry happened, and the ...