8:00

Aren’t we all tubes with arms?

Absolutely LOVE how every time you show hydras there's also some funky music to go with it. "Check out these wacky tubes!"

Well, if you're reading this in 2020, you're an "immortal" organism whose unbroken lineage of cells has replicated successfully for the past 4 billion years.

'My name is Ozymandias, king of kings:

The quallity of these videos is amazing

I used to rule the world,

This show has that very nice balance of informative and relaxing, with light but pleasant music.

when pbs spactime and microcosmos upload within minutes of each other you know its gonna be a good evening :)

We are all products of an immortal cell line. Our genealogy stretches back to the first cell.

5:56

Most mushroom mycelia don't experience senescence! you should do more videos about them!

The hydra reminds me of a philosophical question concerning a push broom. A push broom sat in the same place in a factory for years. It was used every day. At times, the bristles would wear out and a replacement head would be ordered and attached. At other times the handle would crack and a replacement handle would be ordered and attached. Over the years each were replaced separately many times but never was a new broom ordered. Is it the same broom even after all the parts were replaced at least once? Most would say no, and reasonably so. So, is it the same hydra once all the cells have been replaced at least once? Most would say yes, and reasonably so. This is the part, when thinking along philosophical lines, that I find myself quite grateful that some beautiful and historic human came up with the concept of whiskey.

The footage from the new equipment is just gorgeous.

This channel is SO underrated. Seriously, some of the most beautiful stuff on youtube, tell your friends kids.

Best way to talk about science and philosophy at the same time 😃

We gotta bring horizontal gene transfer back. It looks like a good time.

Ahhh its my bday! Ty!!

i have been waiting for this episode since the day this channel was launched. brilliant and utterly amusing as usual, existential crisis addressed✔

Some people decided long ago that snakes were deceivers, because they could shed their skins. What would they have made of a living creature that never ages?