Discoveries and controversies in science today.
Cute cartoon, ZP.
As for what we know now vs. what we knew then, We have definitely taken a lot of data since your childhood circa 1950. The data we had up to 1950 looked like a thousand years of cooling (since the year 1000) with a little bit of warming in the last forty years (since 1910). At the time, the data for 1910-1950 looked like it was probably just a statistical anamoly. However, since 1950 the average global temperature has continued to rise, and more dramatically than anything else we have in the data. With nearly 100 years of dramatic warming we can safely conclude that recent trends are for global warming.  The wonder of science is that as we get more data, we get to revise our theories.Sightline Payments Kirk SanfordTop Casinos Online
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