Sustainability by numbers

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How much biofuel would we need to decarbonise aviation?
The world could need four to five times as much land for biofuels as it uses today.
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Hannah Ritchie
7
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How much does aviation contribute to climate change? How will this change in the future?
Aviation is responsible for around 3% of global emissions, and will be one of the hardest sectors to tackle.
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Hannah Ritchie
26
My TED Talk is now live
We can live well and tackle our environmental problems at the same time. Let's do it.
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Hannah Ritchie
17
How much more electricity will the UK need to switch to electric vehicles?
Going to 100% electric cars would increase electricity demand by around one-quarter. Moving all road transport to electric would increase it by around…
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Hannah Ritchie
17
Biofuels: the US could switch to electric cars and solar power on just a fraction of the land
Biofuels could be making climate change worse, not better. There's a way to put this land to good use.
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Hannah Ritchie
50
Anger, sadness, guilt, hope: on the complex emotions of climate change
It's perfectly normal to cycle through a range of emotions when it comes to climate change.
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Hannah Ritchie
23
Do electric vehicles reduce air pollution?
Electric cars improve air quality compared to petrol and diesel cars, but they do not completely fix the problem.
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Hannah Ritchie
13
If the UK has lots of renewables, why do electricity prices follow gas prices?
Electricity prices are set by the most expensive source that needs to be ‘turned on’ at any given time – that’s usually gas.
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Hannah Ritchie
16
Sustainability by numbers
Sustainability by numbers
Using data and research to understand what really makes a difference
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