Last chance: http://AwesomeSocks.club/vb

Helium is so great...and we are running out of it, but also we are not running out of it.

This video has a surprising number of sources:

2012 article about how helium is mostly squandered by not capturing it, not by using it in balloons: https://www.nature.com/articles/485573a

Here's how a pressure fed engine works and thus why we need helium for rocket launches: https://en.wikipedia.org/wiki/Pressure-fed_engine

A great "Planet Money" on Helium: https://www.npr.org/2019/08/16/751845378/episode-933-find-the-helium

One use of helium I didn't mention was in deep-water diving. Divers put mix their breathing gas with helium because the normal gas (nitrogen) is more soluble in human blood, and as water pressures increase, that pressure can force the nitrogen into your cells with causes "nitrogen narcosis." Helium is much less soluble in blood because, again, IT JUST DOESN"T INTERACT WITH STUFF.

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In which John wonders whether enough is actually enough.

Awesome Socks Club opens on 11/5: http://awesomesocks.club

(All proceeds go to charity, not least because Hank and I have more than enough.)

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Only Two Pizzamas Videos Left?! 0_o

I think I mostly got to the point I wanted to get to here. Of course, there are a lot of other important thoughts that stem from here...specifically, are we extending our care in the right directions? Are we making sure that the web is growing where it needs to grow? And how do we make those decisions.

But the overall thing I wanted to get to is...we are individuals, but we act on the world (and the world acts on us) in ways that individuality does a very bad job of explaining. The self-centered "everything needs me" feeling that I so often have doesn't serve the world or myself.

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http://pizzamas.com for all your Pizzamas needs.

Pizzamas products are only on sale during Pizzamas and then never again and all proceeds go to charity. If you want to learn more about our work there, check out this cool website: https://www.p...

Pizzamas 2021 has arrived: http://pizzamas.com

In which John unboxes a huge variety of Pizza John-related goods.

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I heard a lie this week and it made me think about a bunch of stuff.

Or go to Pizzamas.com!

One of the things it made me think and that I barely talk about in this video is tha...

In which John recommends eleven excellent books that aren't bestsellers. Read more about the books here: https://bookshop.org/lists/john-s-favorite-books-you-probably-haven-t-read (plus a couple bonus recommendations!)

Oh and also....it's comin...

is, of course, how we spend our lives.

In which John talks about Annie Dillard, productivity, and the relative value of haircuts.

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Spend a little time with the other amazing photos from this year at https://www.nikonsmallworld.com/

This was really an honor to be a part of. We started with thousands of images and we worked for a full two days to come up with the winners. Th...

I am getting old...it is making me introspective...

So you're down here in the description, huh. Well, you should probably open up Spotify and subscribe to SciShow Tangents, which is a very good science trivia game show podcast!!!

Su...