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PBS space time is another good channel. Their series on general theory of relativity is really nice. They try to explain it as close as possible to the real thing but still make it accessible without resorting to innacurate analogies

The US and World history series are great too

I haven’t seen Eons. I’ve felt like the quality on Nova and Nature has slipped though. Glad other programs are picking up the slack.

Eons and Spacetime are YouTube shows from their digital team, which might explain the difference.

it's a shame they killed "infinite series" it was one of the best math YouTube channels out there