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This Stunning Graphic Shows Earth’s Temperature Over 22,000 Years

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Climate change is a touchy subject, and it’s something that we only approach with the utmost deliberation and care.

However, as simple or as light-hearted as it appears at first glance, today’s infographic actually provides an invaluable amount of context on a subject that is often mired in the ugly details of mathematical models, multipliers, and policy implications.

Earth’s Temperature Over 22,000 Years

Today’s infographic from XKCD shows the Earth’s temperature since the last ice age glaciation, which was 22,000 years ago. It was around this time that there were vast ice sheets covering North America, northern Europe, and Asia.

Earth's Temperature Over 22,000 Years

This infographic does two things very well.

First, it gives us an idea of temperature changes over time in a relatable fashion, but it also gives us a sense of time scale.

Temperature Changes in Context

Temperatures were cold at the end of the last glaciation, which was around 20,000 BCE – about 4°C cooler than they were during the modern era. Boston and New York would have been covered in thick ice at that time.

Fast-forward half of the span of the infographic, and temperatures have increased to near modern levels (the average between 1961-1990) in about 11,000 years. This would have been around 9,000 BCE, which is around the time the very first humans started farming way back in today’s Middle East region.

From there, temperatures continue to increase for another 4,000 years, peaking around the time that the wheel was invented. This was around 5,000 BCE, which is still considered to be the end of the Stone Age. This is an era still well before the Ancient Egyptians rose to prominence.

The Earth cools again. By the time of the birth of Jesus, temperatures are close again to to those in the modern era. It continues to cool until Shakespearian times, which were in the middle of what is called the “Little Ice Age”.

Finally, after the Industrial Revolution, temperatures spike at a rate not seen before. In the short span of just a century or so, temperatures are back at their previous peak that occurred when the wheel was invented – roughly 7,000 years ago.

Sources used: Shakun et al (2012), Marcott et al (2013), Annan and Hargreaves (2013), HadCRUT4, IPCC,

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How Carbon Credits Can Help Close the Climate Funding Gap

To keep a 1.5℃ world within reach, global emissions need to fall by as much as 45% by 2030, and carbon credits could help close the gap.

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Teaser image, featuring a bubble chart of assorted trillion-dollar values, for an infographic showing how carbon credits can help close the climate funding gap.

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The following content is sponsored by Carbon Streaming

How Carbon Credits Can Help Close the Climate Funding Gap

Governments around the world have committed to the goals of the Paris Agreement, but their climate pledges are insufficient. To keep a 1.5℃ world within reach, global emissions need to fall by as much as 45% by 2030.

Bold and immediate action is essential, but so are resources that will make it happen. 

In this graphic, we have partnered with Carbon Streaming to look at the role that the voluntary carbon market and carbon credits can play in closing that gap.

More Funds are Needed for Climate Finance

According to data from the Climate Policy Initiative, climate finance, which includes funds for both adaptation and mitigation, needs to increase at least five-fold, from $1.3T in 2021/2022, to an average $8.6T annually until 2030, and then to just over $10T in the two decades leading up to 2050. 

That adds up to a very large number, but consider that in 2022, $7.0T went to fossil fuel subsidies, which almost covers the annual estimated outlay. And the world has shown that when pressed, governments can come up with the money, if the global pandemic is any indication. 

Mobilizing Carbon Finance to the Developing World

But the same cannot be said of the developing world, where debt, inequality, and poverty reduce the ability of governments to act. And this is where carbon credits can play an important role. According to analyses from Ecosystem Marketplace, carbon credits help move capital from developed countries, to where funds are needed in the developing world. 

For example, in 2019, 69.2% of the carbon credits by volume in the voluntary carbon market were purchased by buyers in Europe, and nearly a third from North America. Compare that to over 90% of the volume of carbon credits sold in the voluntary carbon market in 2022 came from projects that were located outside of those two regions.  

Carbon Credits Can Complement Decarbonization Efforts

Carbon credits can also complement decarbonization efforts in the corporate world, where more and more companies have been signing up to reduce emissions. According to the 2022 monitoring report from the Science Based Targets initiative, 4,230 companies around the world had approved targets and commitments, which represented an 88% increase from the prior year. However, as of year end 2022, combined scope 1 and 2 emissions covered by science-based targets totaled approximately 2 GtCO2e, which represents just a fraction of global emissions. 

The fine print is that this is just scope 1 and 2 emissions, and doesn’t include scope 3 emissions, which can account for more than 70% of a company’s total emissions. And as these emissions come under greater and greater scrutiny the closer we get to 2030 and beyond, the voluntary carbon credit market could expand exponentially to help meet the need to compensate for these emissions.

Potential Carbon Credit Market Size in 2030

OK, but how big? In 2022, the voluntary carbon credit market was around $2B, but some analysts predict that it could grow to between $5–250 billion by 2030. 

FirmLow EstimateHigh Estimate
Bain & Company$15B$30B
BarclaysN/A$250B
Citigroup$5B$50B
McKinsey & Company$5B$50B
Morgan StanleyN/A$100B
Shell / Boston Consulting Group$10B$40B

Morgan Stanley and Barclays were the most bullish on the size of the voluntary carbon credit market in 2030, but the latter firm was even more optimistic about 2050, and predicted that the voluntary carbon credit market could grow to a colossal $1.5 trillion

Carbon Streaming is Focused on Carbon Credit Integrity

Ultimately, carbon credits could have an important role to play in marshaling the resources needed to keep the world on track to net zero by 2050, and avoiding the worst consequences of a warming world. 

Carbon Streaming uses streaming transactions, a proven and flexible funding model, to scale high-integrity carbon credit projects to advance global climate action and UN Sustainable Development Goals.  

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Learn more at www.carbonstreaming.com.

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