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 ...

Suppose I take some hydrogen gas (H 2) and mix it with oxygen gas (O 2). What happens? Nothing. Nothing happens unless you add a bit of energy—from a spark, perhaps. Add energy and BOOM: You get an ...

Clean hydrogen is a chemical and fuel that can be used to make many sectors of our economy carbon free. Its adoption, however, has been hindered by its lack of affordability. The University of ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Saturn's icy moon Enceladus is looking more and more like a habitable world. The same sorts of ...

You’d be forgiven for thinking that depression has a simple explanation. The same mantra — that the mood disorder comes from a chemical imbalance in the brain — is repeated in doctors’ offices, ...

Your support goes further this holiday season. When you buy an annual membership or give a one-time contribution, we’ll give a membership to someone who can’t afford access. It’s a simple way for you ...