That shows CO2 levels of 200-280 PPM over ~400,000 years the current level of 400PPM is a little outside that range.<p>Also, temperature chart looks closer to a random walk than a clear trend.<p><a href="http:&#x2F;&#x2F;www.climatecentral.org&#x2F;news&#x2F;co2-400-ppm-global-record-18965" rel="nofollow">http:&#x2F;&#x2F;www.climatecentral.org&#x2F;news&#x2F;co2-400-ppm-global-record...</a>