Re: German Study Shows 14% More Vegetation Over the Past 100 years from added CO2
I suppose Cnut247 will come up with some data on the subject.
Whilst we're waiting for that guy, I'll have a go 
But for this one, we don't even really need data; common sense does the job for us.German Study Shows Added CO2 Has Led to 14% More Vegetation Over the Past 100 Years
Okay. Maybe. Not really worth studying because this has zero relevance to human-caused climate change.The evidence is compelling that CO2 emissions are beneficial, rather than harmful, and the “social cost of carbon” is negative.
No, and no. How does this follow from the quote above? Answer: it doesn't.Almost everyone with even just a fraction of a science education knows Co2 is fertilizer to vegetation and that the added 100 or so ppm in our atmosphere over the past decades have been beneficial to plant growth and thus led to more greening of the continents.
Yet, some alarmists still sniff at this fact, or deny it.
I have many years of science education, thanks. 'CO2 helps plants to grow' is hardly an earth-shattering revelation.Yet, some alarmists still sniff at this fact, or deny it.
Crop yields will rise by up to 15% by 2050
You can often spot the nonsensical, misleading claims through the use of phrases such as 'up to'. A rise of 'up to 15%' could include a drop of 50%, and still meet the condition. Ridiculous.... But again, irrelevant. Personally I would expect to see crop yields rise by considerably more than 15% through genetic engineering of drought-resistant strains, etc. And this will be needed to feed the world's population, given the ever-worsening effects of human-caused climate change.
You do realise that temperatures are rising, right? Maybe you could take a look at this study in Nature (summarised here), which uses science, data, and statistical analysis to predict that
Quote
a global temperature increase of 1 degree Celsius would lead to a worldwide decline in wheat yield by between 4.1 and 6.4 percent.
Maybe you also understand that sea levels are rising? Might that cause a few problems? And we can go on and on, but I'll stop there as this post is already long enough.
If you want to consider what the effects of human-caused climate change will be, start from a summary such as this one.
Then come back, and we can debate some more.