As soon as I went onto this website, I was bombarded with a vast array of information about geology and environmental studies. I recognized many of the topics as ones we had learned about in class. You can see its wide array of topics, located on the left sidebar, here:

There is a lot to explore, too much to cover in this post, and some of it is geared towards teachers looking for ways to teach these lessons to their students. Nonetheless, it is still useful for those who are not actually teachers. All of the posts I saw had pictures and/or diagrams, with detailed yet simple explanations illustrating concepts. Below are a couple of posts about concepts that should look familiar to all of us.

I like that no matter the topic, whether it is metamorphic rocks or plate tectonics, they have detailed examples and differentiate between the types of examples in each category.

When I first came upon the site, I was a bit concerned about how all of this information could be legitimate. But after doing some research, I saw that it was founded by a licensed geologist named Hobart King. Once Dr. King retired from teaching at a university, he devoted his efforts to this site. Other contributors also are in the geology field, and from what I saw, their names and credentials could be seen at the bottom of each of their articles.

I suggest going and exploring it! I was on it for quite a while and probably only covered a small percentage of what the site has to offer.

http://www.geology.com/