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CLIMATE WARMING IN THE ANTARCTIC; 5-Degree Rise Over the Last Half Century Is Recorded at Little America ICE IS FOUND THICKER Director of U. S. Program Says Sheet Drops 10,000 Feet in Many Areas
By WALTER SULLIVAN
May 31, 1958, Saturday
I got curious about how early did scientists and politicians first knew about possible climate changes caused by industrialisation and it was quite shocking to find out that they knew about it as early as 1958. This New York Times article reported about the rise in temperature at antarctic of up to 5 degrees. They knew about it but why has there been nothing done until the Ozone hole appeared in 1985?

Global Warming, the mass extinctions of the past and what they can tell us about our future

I read this briefly in the National Library today and I thought that it was really interesting with lots of facts and alarming perspective on past extinctions and how global warming has to do with it. Here are some facts that I found in this book.

Start of industrial revolution - 280ppm

current level of CO2 concentration - 384ppm

Rate of increasing levels yearly
1.54ppm / year 1960 – 2008
0.2ppm / year 1860 - 1960

Mass Extinctions ( units in million years ago )

- Late Devonian - 360
- Permian - 253 - 247
- Triassic - 205 - 199
- Toarcian - 190
- Jurassic
- Cretaceous - 144

These periods experienced mass extinctions in the past and at least 90% of these periods has got to do with High CO2 levels and global warming, only that those were caused by natural conditions whereas the increase in CO2 levels currently are man caused.