marcmetni on "Video doesn't show on the page"

I used the insert media to incorporate a video but it did not show on the page, I just got a link to it. I tried both, linking to a video from the blog's library and form YouTube, both failed to show a video on the page.

This is the page with the link to YouTube video:
http://everyday-science.net/activities/

I am using the Presswork theme.

Best