In this final episode of Crash Course Zoology, we review everything we’ve learned and even look at advances in the field that took place in just the 14 weeks of this course! Rae also shares various ...

Magnets have a north pole and a south pole. Two of the same pole will repel each other, while opposites attract. Only certain materials, especially those that contain iron, can be magnets. And there’s ...

It is my pleasure to introduce you to the very first episode of my new online video series, Crash Course Astronomy. I’m not gonna lie to you: I’m pretty happy about this. It was a lot of fun to write, ...

Besides the daily motions of the Sun and stars, the most obvious change in the night sky over a week or so is the changing phase of the Moon. Sometimes it’s a thin fingernail Moon, sometimes it’s an ...

(RNS) — If today’s high schoolers don’t know John Green from his bestselling young adult novels, like “The Fault in Our Stars” or “Looking for Alaska,” they might recognize him as the host of that ...