In the environmental space it’s very common for us to be nostalgic for a past that we imagine to be sustainable.

We see our lack of sustainability as a modern problem.

Unfortunately there is no sustainable world to rewind back to.

🧵👇
This is because we forget that there are two halves to the sustainability definition:



“Meet the needs of the present”



“without sacrificing the needs of future generations”

We focus a lot on the 2nd half & forget the 1st.

1/
Even if we pretend that humanity’s impact on the environment used to be small (it didn’t, at least on a per capita basis)…



We have always failed to meet the needs of the present generation.

2/
For most of human history, poverty was the default.

One-quarter of babies died in their first year. Half didn’t make it to adolescence.

Yes, this was likely also true of hunter-gatherers.



@MaxCRoser wrote about this here: ourworldindata.org/child-mortalit…

3/
@MaxCRoser The world we are nostalgic for was a brutal and hard one. We don't want to go back there.

It definitely did not meet the definition of sustainability.

If we want to achieve sustainability we need to spend more time looking forward, less time looking back.

/end

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More from @_HannahRitchie

Jan 17
Share of cereals used for human food (vs. animal feed or biofuels):

🌎 Globally: 48%

🇮🇳 India: 93%
🇲🇼 Malawi: 90%
🇯🇵 Japan: 57%
🇨🇳 China: 48%
🇬🇧 UK: 38%
🇧🇷 Brazil: 28%
🇪🇺 EU: 26%
🇪🇸 Spain: 18%
🇨🇦 Canada: 16%
🇺🇸 USA: 11%
🇩🇰 Denmark: 10%

ourworldindata.org/grapher/share-…
Explore the data for any country, and over time 👇

Share of cereals used for livestock feed: ourworldindata.org/grapher/share-…

Share of cereals allocated for industrial uses (mainly biofuels): ourworldindata.org/grapher/share-…
The evolution of cereal allocation in the US is interesting.

Biofuels have increased rapidly
📈 10% in 2000 ➡️ 47% in 2017

Meaning the share allocated to animal feed has declined
📉 72% in 2000 ➡️ 42% in 2017
Read 4 tweets
Dec 13, 2021
A topic where I see one of the biggest gaps between public opinion & recommendations from scientists is palm oil 🌴🦧

Companies often boycott palm oil to look sustainable to consumers. But a ban is rarely the recommendation from experts.

🧵on why it's a complex topic
Global palm oil production has increased rapidly over the last few decades.

Most palm oil is grown in Indonesia and Malaysia. Together they produce around 85% of the world's palm oil.

1/
Increased production of palm oil has meant increased demand for agricultural land.

[Although as we'll see later, not as much as we'd expect]

2/
Read 13 tweets
Nov 6, 2021
It's Nature Day at #COP26

There are many win-win solutions for climate, land use and biodiversity.

Most relate to food: what we choose to eat and how we produce it.

Here's some of our work from @OurWorldInData on these topics 🧵👇
If we want to stop climate change we must transition away from fossil fuels. There's no way around that.

But we also can't solve it without addressing food.

Emissions from food alone could take us past our carbon targets

ourworldindata.org/food-emissions…
One-quarter to one-third of global greenhouse gas emissions come from the food system.

ourworldindata.org/greenhouse-gas…
Read 14 tweets
Nov 4, 2021
It's a big day at #COP26 as more countries pledge to phase out coal power.

I'm trying to track and map these pledges here 👇
ourworldindata.org/grapher/coal-p…

Will continue to update over the day as more details emerge.
Countries that we think will be added, but awaiting confirmation and target dates:
🇧🇼 Botswana
🇧🇳 Brunei
🇮🇩 Indonesia
🇰🇿 Kazakhstan
🇱🇮 Liechtenstein
🇲🇻 Maldives
🇲🇦 Morocco
🇵🇭 Philippines
🇸🇳 Senegal
🇸🇬 Singapore
🇰🇷 South Korea
🇱🇰 Sri Lanka
🇻🇳 Vietnam
🇿🇲 Zambia
A big thank you to people including @EmberClimate, @CoalFreeDave, @leonickroberts, @sasj & others who I'm following to try to keep up-to-date! If you're interested in this space, they are all great follows.
Read 5 tweets
Nov 4, 2021
🆕🌡 The 2021 Global Carbon Budget from @gcarbonproject is out.

We've just now updated all of our CO₂ data on @OurWorldInData with the new release.

It should offer you a quick and easy way to explore all of the results 🧵👇

ourworldindata.org/grapher/global…
The easiest way to explore all of the data is in our @OurWorldInData CO₂ Data Explorer.

Switch between:
➔ Annual
➔ Per capita
➔ Cumulative
➔ Consumption-based
➔ Emissions by fuel
➔ CO₂ intensity (per $)

Explore it here: ourworldindata.org/explorers/co2
The @gcarbonproject make their data open-access, and so do we.

That means you can take any of our charts or download the data from any chart and use it for anything you find useful. No need to ask.

Here I show you how to do this 👇
Read 4 tweets
Oct 30, 2021
It's common to think that:

– middle-income countries only have high CO₂ emissions because they're making stuff for rich countries

– rich countries have only managed to reduce CO₂ because they're exporting emissions elsewhere

🧵with data on how we can test these assumptions
The @gcarbonproject publish annual estimates of consumption-based emissions. These adjust for emissions embedded in the making of traded goods.

We present all of this on @OurWorldInData here: ourworldindata.org/co2-emissions#…

Map shows:
– Net exporters (blue)
– Net importers (red)

1/
This confirms what most of us would expect.

Most countries in 'West' import emissions. Rather than making goods themselves (and dealing with those emissions), they import from other countries.

Most countries in the 'East' export emissions. They produce goods for others

2/
Read 11 tweets

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