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Hannah Ritchie

26 Oct, 14 tweets, 8 min read

@COP26

One week to @COP26, so my inbox is full of requests for data, charts, fact checks on CO₂ emissions.

Great that so many journalists are using data to tell these stories.

A thread of @OurWorldInData resources you might find useful. All open-access & free as a public good.

🧵👇

@gcarbonproject

Easiest way to explore the many CO₂ metrics is in our data explorer.

Includes: Cumulative, annual, per capita, trade-adjusted, share of world totals, by fuel, carbon intensity. For every country. Back to 1751.

ourworldindata.org/explorers/co2

Based on data from
@gcarbonproject

1/

@OurWorldInData

For those that want the raw data to build upon, we provide our complete @OurWorldInData dataset on Greenhouse Gas Emissions on GitHub.

Download in multiple formats. Clear descriptions of the underlying sources. Scripts are published there too.

github.com/owid/co2-data

2/

On our page on CO₂ emissions we provide multiple views of emissions.

For example, cumulative emissions as a treemap:
ourworldindata.org/co2-emissions#…

3/

Annual CO₂ emissions as a treemap

ourworldindata.org/co2-emissions#…

4/

Perspectives on how much CO₂ is embedded in traded goods (consumption-based emissions).

ourworldindata.org/co2-emissions#…

5/

We recently published our climate change impacts data explorer where you can explore metrics such as temperature anomalies, sea level rise, ocean heat content, and others.

ourworldindata.org/explorers/clim…

6/

We have dedicated country profile pages for every country.

Just pick the one you want from the dropdown.

ourworldindata.org/co2-and-other-…

7/

Decarbonizing energy is crucial to reduce emissions.

We have a data explorer on energy where you can explore energy consumption, electricity by source, energy by source, and how this mix is changing:

ourworldindata.org/explorers/ener…

8/

Again, if you want to build upon this energy data we have it all as a complete dataset to download from GitHub.

github.com/owid/energy-da…

9/

Country profiles on energy for every country.

Just select the one you want from the dropdown and find the important metrics on a single page.

ourworldindata.org/energy#energy-…

10/

@MaxCRoser

An overview of the combined challenge of development and reducing CO2 emissions is given by @MaxCRoser in his article on the World's Energy Problem: ourworldindata.org/worlds-energy-…

11/

@OurWorldInData

All of our work on @OurWorldInData is provided as a public good.

Please use it for anything you find useful.

12/

https://twitter.com/MaxCRoser/status/1446151023727452160?s=20

Unfortunately not all of the data we need is publicly available. Some is locked behind paywalls (despite being mostly publicly financed).

This is really unacceptable in the lead up to #COP26. We should take this opportunity to change it 👇

https://twitter.com/MaxCRoser/status/1446151023727452160?s=20

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More from @_HannahRitchie

Hannah Ritchie

@_HannahRitchie

4 Nov

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

@EmberClimate

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

Hannah Ritchie

@_HannahRitchie

4 Nov

@gcarbonproject

🆕🌡 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…

@OurWorldInData

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

@gcarbonproject

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

Hannah Ritchie

@_HannahRitchie

30 Oct

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

@gcarbonproject

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

Hannah Ritchie

@_HannahRitchie

14 Sep

There's a new study out on young peoples' attitudes to climate change.

Survey on 16-25yo across 10 countries. 1,000 people in each country.

Since it's in the media quite a bit, but data not quick to find, I plotted some of the results 🧵👇

56% of surveyed young people said "humanity was doomed" due to climate change.

1/

75% of surveyed young people said the "future is frightening" due to climate change.

2/

Read 9 tweets

Hannah Ritchie

@_HannahRitchie

6 Aug

@OurWorldInData

A common claim is that smallholder farmers produce 80% of the world's food. UN FAO has repeated this.

This is not correct.

Smallholders produce around one-third of the world's food.

My latest @OurWorldInData article looks at the numbers: ourworldindata.org/smallholder-fo…

A key problem here is that people start using 'small farms' and 'family farms' interchangeably.

But these are different. Family farms can be any size: some are huge.

Unfortunately the use of these terms interchangeably creates a bit of a messy trail in the literature.

1/

Smallholder farms (less than 2 hectares) produce around one-third of the world's food.

Family farms (which has a very broad definition) produce around 80% of the world's food.

These are not the same. And policies focused on these groups will not be the same.

2/

Read 6 tweets

Hannah Ritchie

@_HannahRitchie

12 Jul

Food is about more than calories: we need a wide range of nutrients, vitamins & minerals.

A healthy diet is more than 4 times the cost of a basic, calorie-sufficient one.

As a result, three billion people cannot afford a healthy diet.

My latest post: ourworldindata.org/diet-affordabi…

You can get calories in cheaply if you rely on staple foods like cereals & starchy roots.

Across the world, the cheapest calorie-sufficient diet costs about $1 per day.

Unfortunately hundreds of millions still go without.

1/

'Healthy' diets that meet nutritional guidelines are much more expensive because they contain a wide variety of foods.

Costs around 4x as much in most countries.

Three billion people cannot afford this even if they spend most of their income on food.

2/

Read 7 tweets

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