Direct quotes are indicated by numbered arrows:
1- "Human activity may be involved on an even broader scale in changing the global climate."
2- "During the last 20-30 years, world temperature has fallen ..."
3- "... there is increasing concern that man himself may be implicated, not only in the recent cooling trend but also in the warming temperatures ...
4- "... activities of the expanding human population - especially those involved with the burning of fossil fuels - raised the carbon dioxide content of the atmosphere, which acts as a 'greenhouse' ..."
5- "But simulataneously ... growing industrialization and the spread of agriculture introduced increasing quantities of dust into the atmosphere which reduced the amount of solar radiation reaching the earth. ... the cooling effect of the dust particles more than compensated for the warming effect of the carbon dioxide, and world temperature began to fall."
6- "Several consequences [of colder temperatures] have been observed: ... southward intrusion of sea-ice ... unusually large numbers of severe storms ... development of a calamitous drought belt extending around the world ..."
Oh, I forgot to mention, the report was issued in 1974! (Well before Climategate :^)
The more things change,
the more they remain the same!
Warming, cooling, ... whatever - it is always MAN's fault!
(And, of course, WOMAN's too :^)
Could it be NATURAL CYCLES not within Human Control?
Nope - No grant money in that!