Greenhouse Warning on Earth Day, 1970 – NBC News April 22, 2015

It comes at the very end.

Show this to Uncle Dittohead and Aunt Teabag next time you hear “In the 1970s they worried about an Ice Age”.

Interesting sociological note – the cautionary notes about this then-wildly popular political initiative seem to come mostly from the left – in concerns that our worries about pollution will overtake drives for social justice, and against poverty, etc.

See more on the “70s Ice Age” crock below.