Plant food has nothing to do with climate.  It falls out of hydrological systems.  They use to teach that in grade 9 science. Gaia emits 95 % of this trace chemical which comprises a rounding error 4/100 of 1 % of atmospheric gas by weight. It is dwarfed by other chemical compounds. Climate is of course a convection system of cosmic, thermodynamic, oceanic, and other complex variables. There is no single 'agent' responsible for climate and the so-called greenhouse effect would be a part of this convection system. That used to be taught in grade 9 science as well.

The unhinged, extreme, rabid and disconnected-from-reality-cult of Gaia and warming, is portrayed nicely in the following article which fearmongers the peasant about Greenland disappearing. There has been no change to the ice mass on Greenland in the modern times. None. In fact given that the Medieval Warming Period was much warmer than modern temperatures it is clear that in the past 1000 years the Greenland ice sheets have likely grown. In any event, there is nothing to be alarmed about.

But not if you need grant money, political power, regulations and expanding government. Then it must be the end of the world. Instead of 'scientists' saying that Greenland is fine, they scream that it has 'lost' 9 Trillion tons of ice. Wow! This massive number is however 0.3 % of the ice mass of Greenland – statistically insignificant. But that does not open up the coffers of Trillions of dollars in fraud and corruption. Better trumpet end of Greenland instead ! 'Scientists' and 'models' say so !

Link

“Never mind that we are actually in an interglacial period, which essentially means “a brief time-out within an ice age before everything freezes again.” Brief in geological time-scales that is, which is thankfully not really relevant in terms of human lifespans. And we are currently firmly on the long term down-slope:

Earth’s climate over the past 65+ million years (today is on the left hand side of the chart). The temperature maximum is estimated to have occurred about 50-55 million years ago, since then the trend is pointing down – click to enlarge.

A more near term chart (this one has to be read from left to right, i.e., today is on the right hand side) also shows this trend quite clearly. The recent period of warming is an unremarkable blip, indistinguishable from any of the other unremarkable blips that have occurred in the past. In fact, we should be eternally grateful that the downtrend has been briefly interrupted. The “little ice age” as it is known today was not a happy time. There were frequent crop failures and the winters were bitterly cold. The Thames in London tended to be frozen in Winter.

The red blip to the right is the small recovery in temperatures since the terrible cold of the little ice age. Who exactly almost warmed us beyond recognition 8,500 years ago is not quite clear – can we blame Cro-Magnon, the Neanderthal genocide perp? The Romans probably had too many cows or something. The main point is however the long term downtrend. This may indeed be worth worrying about, if one wants to insist on worrying about something – click to enlarge.”

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Greenland has Retained 99.7% of its Ice Mass Over the Past Century

That’s right – the 9,000 billion tons amount to mere 0.3% of Greenland’s ice mass, or a 5 meter deep layer of an ice sheet estimated to be 1.5 kilometers thick. At this rate, all the ice will be gone in about 33,000 years (we suspect the polar bears won’t care).

What makes this especially remarkable, is that those 0.3% are a lot less than the margin of error embedded in estimates of the actual ice mass – these estimates range from 2.6 × 106 km3 to 5.5 × 106 km3. The latter estimate would make for a 3 km deep ice sheet at the center. The calculation of the 0.3% ice loss over the past century is based on the low range estimate. A picture is worth more than a thousand words as they say. Here is a look at Gulliver’s lost ice cube:

Greenland’s lost ice cube in perspective – or as one reader of David Middleton’s article put it: The consensus among 99.7% of Greenland’s Ice Cubes is that “We Are Still Here!”

The article is great - more Eco hysteria over nothing.  0.3% is a rounding error and unworthy of mention.  

It was much warmer in the MWP there and across the world; then it is today.