Easy experiment: Drink orange juice. Brush your teeth. Drink orange juice again. What just happened?

From Bytesize Science, an explanation as to why most toothpastes change the taste of orange juice. The video includes an intro on the five basic tastes that we’re able to detect: sweetness, sourness, saltiness, bitterness, and umami — a Japanese word that we’ve borrowed to describe a “pleasant savory taste” or “a pleasant, brothy or meaty flavor” — and the ingredients of toothpaste.

More videos about the body and how things work.

How fun is this AsapScience video written, directed and performed by Mitchell Moffit? Based on the famous can can piece from Orphée aux enfers by Jacques Offenbach, The NEW Periodic Table Song makes it fun to sing all of the elements… in order! Find it on iTunes or Bandcamp, and if you need help with the lyrics, you can find them in the video notes.

Of course, this video is an excellent addition to a long line of elements songs. They Might Be Giants’ Meet The Elements is one of our favorites, and of course there’s Tom Lehrer’s classic.

via Daily of the Day.

Watch singer-songwriter, satirist, pianist, and mathematician Tom Lehrer perform The Elements live from Copenhagen in 1967. Set to the melody, ”I Am the Very Model of a Modern Major-General“ from Gilbert and Sullivan’s 1879 comic opera The Pirates of Penzance, it challenges the speed at which you can recite all of the elements known in the early-1960s.

Read more about Tom Lehrer here, buy The Elements on Amazon, or watch Daniel Radcliffe sing it on the Graham Norton Show.

When eating pizza, New Yorkers will recommend that you fold the slice in half longways to reduce mess. Now find out about the math and physics working behind the scenes of that tradition in TED Ed’s Pizza physics (New York-style) by Colm Kelleher, animation by Joel Trussell.

We wish that all of our foods explained related math and physics ideas to us… and more about shapes, too.

via SciAm’s Video of the Week.