Is that that Amy Shira Tietal (spelling?) channel? I like her, she keeps her videos short and to the point, and her enthusiasm for the subject is infectious. Nice to see someone her age doing something useful with history rather than trying to tear it down.
She is great... I am one of the 40,000 subs/fans
She writes for a number of news and science publications, including Universe Today, Discovery News Space and the Guardian. She was an "embedded journalist" in the New Horizons mission to Pluto, and has written a book called called
"Breaking the Chains of Gravity: The Story of Spaceflight before NASA".
The only thing I find is that she sometimes speaks too fast and has a somewhat annoying "twang" in her voice (New Yorker perhaps?). However, its just a small criticism. It difficult to fault her knowledge, and you cannot fault her enthusiasm. Also, she has a skill that is distinctly lacking in your average HB; the ability to research her subject thoroughly.