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"we apply the CO₂ fertilization effect... backwards to 1940, and, assuming no other limiting factors, find that CO₂ was the dominant driver of yield growth
https://www.nber.org/system/files/working_papers/w29320/w293...
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> propagandists advancing world views detached from any empirical or rational belief The linked article is entirely empirical, and frankly seems like a good explainer for the lay public to understand what's happening. Your post seems a little like a strawman. Are you arguing against anything in particular?
> Despite this destruction, scientists keep coming to an odd conclusion: The Earth is growing greener. Not green in the metaphorical “sustainable” sense, but in the literal color green.
But this is something we knew two decades ago when I was a tween — not an “odd conclusion”. (The article implies four decades ago.)
The only way you’d find it “odd” is if you followed The Science(TM) rather than scientific investigation.
The issue for humans isn't the "amount of green", it's high quality crop yields.
Increasing CO2 increases plant growth, but also lowers nutritional value.
https://cupblog.org/2023/04/06/the-truth-about-rising-co2-an...
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Except the rate of change in CO2 is far exceeding the rate of change of any compensatory process, and the replacement of natural plant growth with crops leads to excess methane release that more than compensates for the reduced CO2, so yeah. It’s not surprising, but it’s also insufficient.
England is very green at the moment. At least the areas that aren't flooded are. The issue for humans isn't the "amount of green", it's high quality crop yields. Increasing CO2 increases plant growth, but also lowers nutritional value. https://cupblog.org/2023/04/06/the-truth-about-rising-co2-an...
England is very green at the moment. At least the areas that aren't flooded are. The issue for humans isn't the "amount of green", it's high quality crop yields. Increasing CO2 increases plant growth, but also lowers nutritional value. https://cupblog.org/2023/04/06/the-truth-about-rising-co2-an...
The Earth has been far warmer with higher CO2 concentrations in its past and it was fine, but there were no humans then. It’s also been in an ice age fairly recently, but there was little civilization as far as we know and far fewer humans.
Environmental concerns are selfish. They’re about protecting our civilization and our quality of life. The Earth and its ecosystem will change and adapt as usual, but that doesn’t mean we will.
The biggest dangers I see from CO2 are ocean acidification leading to the collapse of ocean ecosystems that feed us, and insane heat waves causing crop failures or even deadly temperatures. Look up “wet bulb temperature limit.” There are heat conditions under which humans die without shelter and unlike cold you can’t fix it by bundling up and using simple tech. I could see heat waves where people without A/C die.
> So, yes, greening is complicated. It’s not inherently good. Sometimes it’s very bad. Context, it turns out, matters a lot.
The tone suggests they're afraid of the change, but the article can't articulate why since the reason for the change and result are both possibly good and bad, but we don't really know yet.
The NASA MODIS project is ongoing and produces data that people are using to measure "greenness" (which the article indirectly cites) and has been going for 20 years https://en.wikipedia.org/wiki/Moderate_Resolution_Imaging_Sp... - it's definitely an interesting dataset.
Didan seems to be leading the vegetation research for MODIS and the data set has been cited thousands of times (https://scholar.google.com/citations?user=TxQK6U8AAAAJ&hl=en...)
England is very green at the moment. At least the areas that aren't flooded are. The issue for humans isn't the "amount of green", it's high quality crop yields. Increasing CO2 increases plant growth, but also lowers nutritional value. https://cupblog.org/2023/04/06/the-truth-about-rising-co2-an...
We overproduce food for the human race by like 35% right now, we have a long ways to go before we hit a population issue. Regardless of all the hand-wringing certain rich people do about the birth rates in Africa. A much more pressing concern is our lack of any inclination to reasonably distribute it.
England is very green at the moment. At least the areas that aren't flooded are. The issue for humans isn't the "amount of green", it's high quality crop yields. Increasing CO2 increases plant growth, but also lowers nutritional value. https://cupblog.org/2023/04/06/the-truth-about-rising-co2-an...
The whole environmental movement made a mistake framing things as a moralistic struggle to “save the Earth.” Like George Carlin famously said on this subject: “the Earth will be fine. We’re fucked. The Earth has been far warmer with higher CO2 concentrations in its past and it was fine, but there were no humans then. It’s also been in an ice age fairly recently, but there was little civilization as far as we know and…
England is very green at the moment. At least the areas that aren't flooded are. The issue for humans isn't the "amount of green", it's high quality crop yields. Increasing CO2 increases plant growth, but also lowers nutritional value. https://cupblog.org/2023/04/06/the-truth-about-rising-co2-an...
The whole environmental movement made a mistake framing things as a moralistic struggle to “save the Earth.” Like George Carlin famously said on this subject: “the Earth will be fine. We’re fucked. The Earth has been far warmer with higher CO2 concentrations in its past and it was fine, but there were no humans then. It’s also been in an ice age fairly recently, but there was little civilization as far as we know and…