Apparently many of the channel's uploads are from the 'ABC News Archives',[0] so they might not be entirely lost. Maybe prod IA to see if its tv news project can ingest it officially, or already have.

BTW a quick scrape (raw HTML, missing any JS-loaded stuff) of archived btm0815ma channel pages[1] finds some more videos that were saved "naturally" in the wayback machine:

https://web.archive.org/web/*/wayback-fakeurl.archive.org/yt/<ID>

Qcdo0oENjCc 60 Minutes (CBS) - 1994-04-24
SEqbaaxsEqI NBC Nightly News - 2003-11-19
mHHacMAFZxc Viewpoint (ABC) - 1994-07-22
NXQvrVQw1Uw What About Tomorrow? on computers (1973)
RZB1zY6yKDc Democratic Convention (1968) - 8 - Day 3
gEGCPC3GfC4 CBS Evening News open - 1994-11-09
V7UcBk2A_58 CBS News - Video games (1995)
T0yWcB5f1Qs CBS News - TV Nielsen ratings (1984)
LnDZi85n-Ac CBS News - Claymation (1986)
o7ujCaLV8SA CBS News - various Apollo 11 reports - 1969-07
HF1k6HnJrTU CBS Evening News - 1980-08-05
B5-WkCUlXe4 The Video History of Our Times - 1940
Sabw_n3EYC4 The Video History of Our Times - 1945
U8dknEvXw40 The Video History of Our Times - 1946
813sTJDv0cc The Video History of Our Times - 1941
fuskHqS8QRk 60 Minutes (CBS) - "Underground Railroad" - 1988-10-16
ZExs5rFpIkg 60 Minutes (CBS) - "The Prince of Penny Stocks" (1988)
4GtTNe6N3ds 60 Minutes (CBS) - George Burns - 1988-11-06
MQOBNTMwqTE 60 Minutes (CBS) - Home Shopping Club - 1988-12-18
9itrdPnp3l4 World News (ABC) - 2009-11-05
Jf3kACc68bk NBC Nightly News - 2011-03-15
hHp0565IdKs NBC Nightly News - 2011-03-14
jMmZKafb6no American Parade (CBS) - The Contra War (1984)
o11zhy-43yE CBS Evening News (Western) - 1979-09-04
d21Z8oXybig CBS Reports: Robert F. Kennedy (1967)
slUnV2RabfI 60 Minutes (CBS) - "Secrets and Lies" (1997)
OS0QNJ0Xbaw Nintendo of America headquarters (1990)
UrTS_lmPQ1k CBS Evening News - 2011-03-12
ITtQigDn0FU CBS News - 2003-03-19 - 11:35 p.m. - 2 of 3
r0xsJFREmOU Carter's final hours in the White House (1981)
x_t-iKeWdRI Steve Jobs in 1991
SkNnWxDKxh4 CBS - 1990-07-26 - report on Roseanne Barr
GWgL5W0b6k0 Dan Rather signs off with "Courage" - September 1986
zsa72D8Kegc Public Broadcast Laboratory: The Whole World Is Watching (1968)

0 https://twitter.com/shabanianaram/status/1490172899868565505

1 https://web.archive.org/cdx/search/cdx?url=youtube.com/chann...

That's quite an interesting documentary on HCI, including maths pedagogy with turtle robot graphics from the Logo Project at MIT. There's no trace of the series elsewhere on the web...

“The computer symbolizes both the promise and problems we face in our complex, man-machine world. Its misuse by large institutions irritates us. Its misuse by government could threaten us. But its potential for extending our ability to communicate and our knowledge of ourselves is enormous. If it is made relatively easy for anyone to use, the chances are far greater that it will be used on the side of man.

“No longer can we ask, ‘What can we do?’ But rather, ‘How can what we do give us a better world?’ In future programs in this series, we'll look into research that just might point to solutions for our cities, our healthcare, and our education. We'll discover that there is hope, but there are no quick, easy answers to the question we ask: What about tomorrow? This is Jules Bergman.”