Hannah Ritchie Profile picture
Dec 13, 2021 13 tweets 4 min read Read on X
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 Image
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/
Some of this has come at the cost of tropical forests. After beef, oilseeds are the world's largest driver of deforestation.

Here, oilseeds is both palm oil and soybeans.

3/
Here there's a bit more nuance. Some of the palm oil that is being grown on previously forested land replaced *already logged forest*.

Nonetheless, it's undeniable that palm oil expansion has come at the cost of a decent amount of tropical forest.

4/
This tropical deforestation is obviously terrible for ecosystems and biodiversity.

So, palm oil is evil, and we should boycott it, right? Let's swap it for coconut oil or something?

Seems reasonable until you consider what the alternatives might look like.

5/
Palm oil is just an incredibly productive crop. You get massive oil yields compared to the alternatives.

6/
This means that it produces a large % of global vegetable oil on a small amount of land.

36% of oil on just 9% of land.

As vegetable oil demand has increased, palm oil has been a land efficient way of meeting it.

7/
Consider what would happen if we tried to meet global vegetable oil production from only one crop.

How much land would we need? 👇

10x times less land for palm versus other tropical crops

8/
Some companies have banned palm oil from their products and switched to alternatives such as coconut or groundnut.

That's okay, but imagine if all companies did this. We'd need much, much more tropical croplands to grow it.

That means cutting down tropical forests.

9/
Expert recommendations are therefore geared towards – certification of sustainable palm production (e.g. RSPO);
– tracing palm oil supply chains;
– supporting improvements in crop yields

That means supporting sustainable producers rather than boycotting the whole industry

10/
That makes sense for many food products where alternatives are low-yield tropical crops

But some countries also use palm as biofuel. Large % palm oil imported into EU is used for biofuel. That has a larger carbon footprint than diesel. That's something they *should* boycott

11/
All of this is provided in much more detail (with data + references) in our @OurWorldInData page on palm oil: ourworldindata.org/palm-oil

/end

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More from @_HannahRitchie

Sep 14, 2023
I've heard several people say that renewables are not driving an "energy transition". It's really just an "energy addition".

This makes it sound like fossil fuels have been business-as-usual, and we've stuck renewables on top.

I think there is a better way of framing this...🧵
In rich countries it really is an "energy transition".

Renewables are replacing fossil fuels in the electricity grid.

And as EVs replace petrol, and heat pumps replace gas (which are in early stages), the broader energy mix will transition too.

1/ Image
In low & middle income countries, energy consumption is growing strongly, so all of the lines are going up.

However, I think "energy addition" is the wrong phrase here. It's more like "fossil energy displacement".

Growth in fossil fuels would be ⬆️⬆️ without renewables.

2/ Image
Read 5 tweets
Jun 4, 2023
Terrible of the @guardian to publish this ill-informed, out-dated article on EVs.

Why does it build so much of its coverage around the climate crisis, then continually publish nonsense articles that undermine real solutions to address it?

theguardian.com/commentisfree/… Image
@guardian Most of the claims in the article are wrong.

You only have to look at the first, on the CO2 emissions of EVs vs. petrol/diesel cars.

Yes, emissions are higher during the production of an EV but this very quickly pays off when you start driving it.

... Image
@guardian Many have covered this in detail:

carbonbrief.org/factcheck-how-…

sustainabilitybynumbers.com/p/ev-fossil-ca…

iea.org/data-and-stati…

Over its life course, the emissions of EVs are lower (how much lower depends on the electricity mix). As the world decarbonises, this will get even better.

...
Read 5 tweets
Mar 29, 2023
What impact have national greenhouse gas emissions had on global warming?

A new paper by @Jones_MattW & team at @gcarbonproject quantifies each country's contribution to global mean surface temperature rise.

I've added this data to @OurWorldInData. Here are some highlights 👇 Image
@Jones_MattW @gcarbonproject @OurWorldInData First, the team calculcates contributions to temperature rise using cumulative emissions of CO2, methane & nitrous oxide since 1850.

They convert this into carbon-dioxide equivalents using the GWP* method.

Includes emissions from fossil sources, agriculture & land use

1/
@Jones_MattW @gcarbonproject @OurWorldInData Here are 5 countries with the largest contributions to global temperature rise.

🇺🇸 USA: 0.28°C
🇨🇳 China: 0.2°C
🇷🇺 Russia: 0.1°C
🇧🇷 Brazil: 0.08°C
🇮🇳 India: 0.08°C

2/ Image
Read 12 tweets
Dec 22, 2022
It's easy to be skeptical that countries are taking little action on climate change.

This isn't true.

Looking at the shift in our trajectory in just a few years tells a different story.

I looked back at the past 6 years of @climateactiontr projections 👇
@climateactiontr 2016.

Policies in place would have taken us to 3.3 to 3.8°C by 2100.

Country pledges to 2.5 to 2.7°C.

1/
@climateactiontr 2017.

National policies: 3.1 to 3.7°C

Country pledges: 2.6 to 3.2°C

2/
Read 11 tweets
Dec 20, 2022
🆕 @f_spooner and I have published a major new redesign of our work on Biodiversity on @OurWorldInData 🐘🦁

A day after the world sealed a new deal on how to limit biodiversity loss & reverse it.

Explore all our data and articles in one place: ourworldindata.org/biodiversity Image
@f_spooner @OurWorldInData This redesign includes a block of Key Insights on the topic 👇

1/ Image
@f_spooner @OurWorldInData A spot where you can find all of our research and writing 👇

2/ Image
Read 4 tweets
Dec 5, 2022
Eating locally is not an effective way to reduce the carbon footprint of your diet.

This is despite a recent paper in @NatureFoodJnl claiming that 'food miles' make up 20% of food emissions.

In my latest Substack post I explain why this is wrong: hannahritchie.substack.com/p/food-miles
@NatureFoodJnl Some of the key points:

The new paper by Li et al. (2021) claimed that 'food miles' were 3.5 to 7.5 times higher than previous studies.

This is only because they redefined 'food miles' (to include things that are definitely not food miles).

1/
@NatureFoodJnl Their own results do not even support 'eating local makes a big difference'

They modelled a scenario where all countries got *all* of their food domestically.

Food emissions were reduced by just 1.7%.

They actually showed the opposite: it was very ineffective...

2/
Read 5 tweets

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